Thread: Starting Hptuners

Originally Posted by TheOtherNick

If your car wont shift WOT then you need tq mangament in the shifts, what timing table are you asking about? I zero out the temp modifiers so that it is just what I command it all the time.

so if my car shuts off at wot from 1-2, should i enable tq mgmt?

It should never shut off.

Nope, the rev limiter is kicking you off.

Just curious, what version software are you using? 2.22 or Beta 2.23?

Thanks!

Torque managment does no such thing. It is a preventative measure designed to protect weak drivetrain components. GM wasn't stupid, just cheap. On another note each and every rebuilt performance tranny I've ever installed required fine tuning to achieve desired results, no patter what. No two transmissions will respond exactly the same to a particular tune.

Originally Posted by crazyguy03

Torque managment ...with this turned off you are pushing more power through a trans that doesnt want it and causing the shift to take longer

It does not cause the gear change to take longer- When you exceed the amount of power the clutch frictions/steels and band/drum assembly can hold, you get slip. This has nothing to do with TQ MGT causing the shift to delay. No different than trying to hook a high whp car on radials vs. slicks.

No, I'd not re-enable Tq Managment, as again, it's based on a set of default values for a stock powertrain. I'd adjust apply rates and line pressure via EPC to find a happy medium between driveability, shift firmness, and parts durability. Seat of the pants, real street tuning here cannot replaced by a mail order or dyno tune. If you take nothing else away from this, remember, EVERY combo is different.

Originally Posted by TheOtherNick

To add fuel you will need to add to the table by multiplying by 1.02, if you need to pull fuel you need to multiply by -1.02. Remember we are only scaling from 7000hz up in the maf table like so.

I just got my HPT software and have been following this thread and everything is good so far. The problem I am having is the factor to multiply by when running rich. I am using an AEM WB and needing to lean out for my WOT runs. If I multiply by the -1.02 as stated, it puts all the cells to zero. If I do the 1.02 it increases it as it should.

Should I actually multiply by .98 to get a small decrease in fueling.

Yup.

open loop for the beta guys that have a WB is great for fuel tuning... I haven used trims for a while to be honest...

Open loop scares me.

And IMO not worth my time.

^^^why?

Because I drive under 7k a year and its not worth my time to learn it and do a bunch of junk I'll never use.

I was nervous about tuning, open loop is about as easy as it gets. There is a great write up Russ k on hpt forums for open loop maf tuning. It takes half a day if that to get dialed in. Once your done you plug the narrowband back in and your good to go, you can fine tune your fuel trims after if you want but if you did the open loop right, kinda hard not to, they should be pretty close already.

Open Loops pretty simple really. Just a few more additional steps.