CrazyGuy03
New member
Re: J57ltr's 05' GTP, Korn Fed.
Damn DHP guys ....
doh!
Damn DHP guys ....
doh!
J57ltr's 05' GTP wrecked again.
- Thread starter J57ltr
- Start date
Scottydoggs
Killa Bee
Re: J57ltr's 05' GTP, Korn Fed.
See that's what I am hearing too is earlier years some guys do it in the IFR table and others swear by the Skew method. I am beginning to think that it doesn't work on some years. I haven't really noticed if the pre 04 cars have that Alternate IFR table or not. That thing confuses the crap out of me. It shows the same information as the IFR table but the values are swapped. Instead of having the highest flow at -50 kPa it's at 100kPa. I am still super confused as to why pre 04 cars show a IFR that is 0-100kPa and 04+ has -50-100 table. To me is should start at 0 and go to 150-160 kPa if anything. The pre 04 cars all have a rising rate FPR and so the net pressure above 101.3 kPa will be maintained so if you are running 10 psi of boost then your Net fuel pressure will be the same. Let's say its 55psi at 101.3 kPa with 10 psi (about 200 kPa) boost the net pressure will still be 55psi even though the gauge pressure is 65 psi. Basically the fuel flow remains the same while under boost. On the 04+ cars your fuel pressure is 65psi so at 10 psi boost the net fuel pressure is now 55psi so the flow will be lower.
See that's what I am hearing too is earlier years some guys do it in the IFR table and others swear by the Skew method. I am beginning to think that it doesn't work on some years. I haven't really noticed if the pre 04 cars have that Alternate IFR table or not. That thing confuses the crap out of me. It shows the same information as the IFR table but the values are swapped. Instead of having the highest flow at -50 kPa it's at 100kPa. I am still super confused as to why pre 04 cars show a IFR that is 0-100kPa and 04+ has -50-100 table. To me is should start at 0 and go to 150-160 kPa if anything. The pre 04 cars all have a rising rate FPR and so the net pressure above 101.3 kPa will be maintained so if you are running 10 psi of boost then your Net fuel pressure will be the same. Let's say its 55psi at 101.3 kPa with 10 psi (about 200 kPa) boost the net pressure will still be 55psi even though the gauge pressure is 65 psi. Basically the fuel flow remains the same while under boost. On the 04+ cars your fuel pressure is 65psi so at 10 psi boost the net fuel pressure is now 55psi so the flow will be lower.
Scottydoggs
Killa Bee
Re: J57ltr's 05' GTP, Korn Fed.
i suggest just doing your math toss the new values in, then drive it and let the trims learn, then make adjustments as needed to get the trims in line.
im running the stock maf file for my car, and got the 42's just about dialed in, you know how slow trims are to learn when you dont drive it no where, so its taking a while.
i tried other peoples values for 42's and they were not even close for my car, one was pig rich, the next lean as hell, then i got my sweet spot narrowed down after doing what i suggested.
i suggest just doing your math toss the new values in, then drive it and let the trims learn, then make adjustments as needed to get the trims in line.
im running the stock maf file for my car, and got the 42's just about dialed in, you know how slow trims are to learn when you dont drive it no where, so its taking a while.
i tried other peoples values for 42's and they were not even close for my car, one was pig rich, the next lean as hell, then i got my sweet spot narrowed down after doing what i suggested.
chrsmi1
Awesome Level Member
Re: J57ltr's 05' GTP, Korn Fed.
Now doing the skew percent method that maf was horrible looking. I must have maf tuned a dozen different times and it was still off.
Oh I'm with big scott. This is just a good example for you. These values I posted worked great on mine with stock maf settings. Never touched my fueling via maf once I got my ifr dialed in.
Now doing the skew percent method that maf was horrible looking. I must have maf tuned a dozen different times and it was still off.
chrsmi1
Awesome Level Member
Re: J57ltr's 05' GTP, Korn Fed.
I've wondered about this too but in the end just accepted and dealt with it. I moved through the stages from anger to denial to acceptance in record time.
Re: J57ltr's 05' GTP, Korn Fed.
Scotty, It already is set and seems to be just fine. That's not what I am worried about. I hate using something that I just blindly use "because that's the way it is". I would like to know why it's scaled from -50 to 100 kpa. that makes absolutely no sense. It should read out to at least 160 kPa. It's like they didn't label it right in the program, but I know it's also like that in HPT as well. It just makes no sense.
Scotty, It already is set and seems to be just fine. That's not what I am worried about. I hate using something that I just blindly use "because that's the way it is". I would like to know why it's scaled from -50 to 100 kpa. that makes absolutely no sense. It should read out to at least 160 kPa. It's like they didn't label it right in the program, but I know it's also like that in HPT as well. It just makes no sense.
Scottydoggs
Killa Bee
Re: J57ltr's 05' GTP, Korn Fed.
05 got a different bin for sure. some things are just not the same, as long as it runs well and your happy, let it slide. leave it to the gods and trust it works as it should.
05 got a different bin for sure. some things are just not the same, as long as it runs well and your happy, let it slide. leave it to the gods and trust it works as it should.
Re: J57ltr's 05' GTP, Korn Fed.
So this morning just as I pulled into work I got a check engine light. I left my work phone at work last night so I didn't have Torque pro running. When I got to the office I brought the phone out and checked the code it was a P0420 Cat efficiency below threshold. I'll pull up the front and rear O2's and see how they act on the drive home. Drove home nice last night and to work this morning.
So this morning just as I pulled into work I got a check engine light. I left my work phone at work last night so I didn't have Torque pro running. When I got to the office I brought the phone out and checked the code it was a P0420 Cat efficiency below threshold. I'll pull up the front and rear O2's and see how they act on the drive home. Drove home nice last night and to work this morning.
SgtMarshal
Active member
Re: J57ltr's 05' GTP, Korn Fed.
I hate it when that happens
I hate it when that happens
industrialfish
New member
Re: J57ltr's 05' GTP, Korn Fed.
Case in point, I can't find a tunable 05 bin either. Using the bin that I pulled of the 04 gtp pcm I pulled from the junkyard.
Case in point, I can't find a tunable 05 bin either. Using the bin that I pulled of the 04 gtp pcm I pulled from the junkyard.
SgtMarshal
Active member
Scottydoggs
Killa Bee
Re: J57ltr's 05' GTP, Korn Fed.
i got a good dhp 05 gtp bin file. if you needed it just say so.
i got a good dhp 05 gtp bin file. if you needed it just say so.
Re: J57ltr's 05' GTP, Korn Fed.
I don't get what you are saying. I have 2-05 bins and an 04 bin. I did pull them all from the PCM's I have.
I don't get what you are saying. I have 2-05 bins and an 04 bin. I did pull them all from the PCM's I have.
Re: J57ltr's 05' GTP, Korn Fed.
So my first results are in. I had the P0420 go away and hasn't returned so far. I haven't changed anything in the tune yet.
First tank was 14.00 gallons and I drove 189.9 miles. For a grand total of 13.564 mpg.
I got down to 3/4 tank and decided to fill up to see where it was and put in 7.253 gallons and drove 96.3 miles for a total of 13.277.
right now I am running 34% more fuel. I'm going to drop it to 30% and 28.5% and see how that goes. Gas mileage isn't great obviously, but it's about a wash. If I get a car wash I end up getting .20 off per gallon and since I did that when using premium anyway it isn't really any more expensive. It was .35 more running E85 so far without tuning.
So my first results are in. I had the P0420 go away and hasn't returned so far. I haven't changed anything in the tune yet.
First tank was 14.00 gallons and I drove 189.9 miles. For a grand total of 13.564 mpg.
I got down to 3/4 tank and decided to fill up to see where it was and put in 7.253 gallons and drove 96.3 miles for a total of 13.277.
right now I am running 34% more fuel. I'm going to drop it to 30% and 28.5% and see how that goes. Gas mileage isn't great obviously, but it's about a wash. If I get a car wash I end up getting .20 off per gallon and since I did that when using premium anyway it isn't really any more expensive. It was .35 more running E85 so far without tuning.
Last edited:
Re: J57ltr's 05' GTP, Korn Fed.
So here we are another week in and I gotta say this Korn thing is not bad. I am really liking that the car is no longer sluggish when the temps are in the 100's. The car runs well no real issues except what I will post below.
So on 2 occasions I have had where I go to start the car after sitting for a long period of time and it will go through an entire starter cycle and not start, I hit the key again and it will fire up and set into a slightly rough idle then straighten out.
I have run several tanks so far with the following results.
34% injector factor
Tank 1
$2.06 E85
$2.67 Super
13.564 MPG
Tank 2
$1.97 E85
$2.45 Super
13.277 mpg
Changed to 32.5% injector factor
$2.02 E85
$2.55 Super
14.72 mpg
Added wideband gauge and sensor drove more aggressively.
$1.99 E85
$2.39 Super
13.614 MPG
I bought an APSX D2 Wideband kit. I just got around to installing it Friday and man I should have just used the MIG welder although I despise it with all my being. I ended up pulling up the car and using one of the TIG machines and welding a hex nut in an area such as a downpipe on a car is a real pain in the azz. I could see everything but the top. With a MIG you can kinda guess and point and get it sealed. With TIG, not so much. I got it in and that's the most difficult part of installing one of these. The only other thing I needed to do was connect power and ground. I calibrated it and set it to an E85 setting which I think I may switch since everyone doesn't seem to be used to E85 AFR's.
Right now I am cruising around 9-10:1 and when I get on it I am about 7.4:1. A couple of times I started off and the unit displayed E 0 which I am not sure what that means, but I think that it may have gone too rich. The first couple of times I did that I let off and it went back to normal. The next couple of times I started from a dead stop and floored it and it displayed E 0 then the display started showing in the 5-6 range until it settled into the low-mid 7's.
In other news I got all the interior back in... All I can say is I really really missed my arm rest. I decided to mess with the stereo a bit, my passenger side speaker either has something against the cone, the VC is coming apart or the surround is damaged it buzzes really bad. I figured I would start by adding the interconnects and the power wire while installing the carpet, that worked out well although somehow my Park Avenue seems to be shorter than the Grand Prix becasue the same wire only made it into the trunk by about 6" where it was 2' into the trunk of the PA. The box I screwed up and made too tall is still in there so I pulled an amp to put in and just used a USA Acoustics 2100 and ran it stereo at 2 ohms. It's one of my smaller ZED built amps and has a built in crossover. Everything is in but this car rattles worse than a third gen Camaro. I now see why these guys try to impress people with videos of there whole trunk rattling. Now I see it doesn't take much at all.
Next up will be a set of high end 6.5's and which ever tweeters I have that will match up with them. I think I am going to just use a set of SAS Revolver 5-1/4" component sets for the rear (yes they are that old) and I'll use an A/D/S PH15 to power those. I have a Lanzar EQ and a Preamp as well and we will see if I have the room up front. Sub amp will change to a HiFonics Series 7 Zeus or maybe something else not quite sure which one I want to use. I am still on the fence about changing the factory radio because of all the issues I see on 04+ cars.
I played with the SSIC and I had ordered some 3/8" Phenolic and had a sheet of 1/4" that I have had for a long time. I started setting up to cut them out to make spacers the 1/4" between the blower and the SSIC and a 3/8" one between the LIM and SSIC to help with heat soak. I got distracted with the other things I was doing so I didn't even make any cuts with those. Still need to either machine some custom injector spacers or modify a fuel rail, still haven't decided on that. Bolts are easy enough to get, so that's not an issue.
Guess that's enough for now.
Jeff
So here we are another week in and I gotta say this Korn thing is not bad. I am really liking that the car is no longer sluggish when the temps are in the 100's. The car runs well no real issues except what I will post below.
So on 2 occasions I have had where I go to start the car after sitting for a long period of time and it will go through an entire starter cycle and not start, I hit the key again and it will fire up and set into a slightly rough idle then straighten out.
I have run several tanks so far with the following results.
34% injector factor
Tank 1
$2.06 E85
$2.67 Super
13.564 MPG
Tank 2
$1.97 E85
$2.45 Super
13.277 mpg
Changed to 32.5% injector factor
$2.02 E85
$2.55 Super
14.72 mpg
Added wideband gauge and sensor drove more aggressively.
$1.99 E85
$2.39 Super
13.614 MPG
I bought an APSX D2 Wideband kit. I just got around to installing it Friday and man I should have just used the MIG welder although I despise it with all my being. I ended up pulling up the car and using one of the TIG machines and welding a hex nut in an area such as a downpipe on a car is a real pain in the azz. I could see everything but the top. With a MIG you can kinda guess and point and get it sealed. With TIG, not so much. I got it in and that's the most difficult part of installing one of these. The only other thing I needed to do was connect power and ground. I calibrated it and set it to an E85 setting which I think I may switch since everyone doesn't seem to be used to E85 AFR's.
Right now I am cruising around 9-10:1 and when I get on it I am about 7.4:1. A couple of times I started off and the unit displayed E 0 which I am not sure what that means, but I think that it may have gone too rich. The first couple of times I did that I let off and it went back to normal. The next couple of times I started from a dead stop and floored it and it displayed E 0 then the display started showing in the 5-6 range until it settled into the low-mid 7's.
In other news I got all the interior back in... All I can say is I really really missed my arm rest. I decided to mess with the stereo a bit, my passenger side speaker either has something against the cone, the VC is coming apart or the surround is damaged it buzzes really bad. I figured I would start by adding the interconnects and the power wire while installing the carpet, that worked out well although somehow my Park Avenue seems to be shorter than the Grand Prix becasue the same wire only made it into the trunk by about 6" where it was 2' into the trunk of the PA. The box I screwed up and made too tall is still in there so I pulled an amp to put in and just used a USA Acoustics 2100 and ran it stereo at 2 ohms. It's one of my smaller ZED built amps and has a built in crossover. Everything is in but this car rattles worse than a third gen Camaro. I now see why these guys try to impress people with videos of there whole trunk rattling. Now I see it doesn't take much at all.
Next up will be a set of high end 6.5's and which ever tweeters I have that will match up with them. I think I am going to just use a set of SAS Revolver 5-1/4" component sets for the rear (yes they are that old) and I'll use an A/D/S PH15 to power those. I have a Lanzar EQ and a Preamp as well and we will see if I have the room up front. Sub amp will change to a HiFonics Series 7 Zeus or maybe something else not quite sure which one I want to use. I am still on the fence about changing the factory radio because of all the issues I see on 04+ cars.
I played with the SSIC and I had ordered some 3/8" Phenolic and had a sheet of 1/4" that I have had for a long time. I started setting up to cut them out to make spacers the 1/4" between the blower and the SSIC and a 3/8" one between the LIM and SSIC to help with heat soak. I got distracted with the other things I was doing so I didn't even make any cuts with those. Still need to either machine some custom injector spacers or modify a fuel rail, still haven't decided on that. Bolts are easy enough to get, so that's not an issue.
Guess that's enough for now.
Jeff
chrsmi1
Awesome Level Member
Re: J57ltr's 05' GTP, Korn Fed.
Yeah I normally have to at least prime the pump once or it won't start on the first try. Plus I usually sit there for a minute or two or it will stall taking off. #e85 life.
I have my wideband set to gas afr. Not really a good reason why, but it seems easier?
Yeah I normally have to at least prime the pump once or it won't start on the first try. Plus I usually sit there for a minute or two or it will stall taking off. #e85 life.
I have my wideband set to gas afr. Not really a good reason why, but it seems easier?
Re: J57ltr's 05' GTP, Korn Fed.
What are your temps like? I am coming out in the morning to 90* temps and I always turn the key on and when the pump stops I turn it to start so it's already primed. Last time I checked I was holding pressure overnight without an issue (still in the 40 psi area). I need to try it again and also watch my fuel pressure and see how that's holding up. My gauge is too small for the pod though to need to make an adapter. May just add that tonight.
Jeff
What are your temps like? I am coming out in the morning to 90* temps and I always turn the key on and when the pump stops I turn it to start so it's already primed. Last time I checked I was holding pressure overnight without an issue (still in the 40 psi area). I need to try it again and also watch my fuel pressure and see how that's holding up. My gauge is too small for the pod though to need to make an adapter. May just add that tonight.
Jeff