• The site migration is complete! Hopefully everything transferred properly from the multiple decades old software we were using before. If you notice any issues please let me know, thanks! Also, I'm still working on things like chatbox, etc so hopefully those will be working in the next week or two.

Dyno Numbers for the Turbo 04!

ADrugDealer

ADrugDealer

Schooner Tuner
Went to Ice Cream Cruise in Omaha, hopped on the dyno things go interesting. The car would only rev to 3700 then just stop, well we pulled it off the dyno and took to the streets to see if it happened there too and sure enough it did, but only with high boost levels. Frosty took to the tuning laptop and turns out it was doing something it had never done in the past.. Abuse mode was kicking in... weird. Turned it off... pulled and it was fine.

Well, the dyno line was long and I never made it back on to finish the pulls, and then it rained out today so again no pulls; however, I did get some numbers from the 2nd gear 3700RPM pulls. Going to go to a local shop to get full pulls done. The Dyno techs said the numbers were still accurate.

pl0iHjm.jpg

w3NqujO.jpg




I have no clue how the stock trans is holding that back but hey, whatever!
 


OMG the TQ!! Lol must be retarded from a dig or rolling into it. I think your gonna need a real set of tires if you don't have already!
 
Yeah... It was still climbing when the car just gave up. I was drop jaw looking at it. Cant wait to see what its really got.
 


Turbo 3.8 make ridiculous amount of torque. What saves us usually is lack of traction.
This is why I can do 2nd gear starts and still do a 1.6 60 foot. With a 2.6 pulley on the S/C before there was no way in hell I was doing a 2nd gear start and have a good ET.
I too had luck with stock trans in a FWD application. but if you hook hard, you will break it sooner than later with that amount of torque. That is pretty impressive for 3700rpm pull.

That said the best thing we turbo guys can do is buy a smart RPM based boost controller which would limit torque at low RPM.
Most cars running high boost have to do that either for traction or to protect the transmission.
 
yeah here's hoping the msbc1 helps us out

2nd gear artificially inflated the tq numbers over 3rd but not everyone changes trans tables just for the dyno

i take it you hit the maf rationality table or did you actually hit tq abuse?
 
When we turned Abuse mode to disabled in the trans settings the issue stopped so I am going to go with tq abuse.
 
tq numbers are way off... due to the ignition pickup being wrong on every dynojet I've ever seen when it comes to our cars.
And holy correction factor!
1.07???
 


So more like 450ish tq?? Is that what your saying? ^^^^^^^^

Edit what about the correction factor? Whats normal or what should it be at? Or how to tell where is should be?
 
The graph may say 3250 but look at the lines, they extend past 3250... Im not saying you are wrong or the numbers are correct, I have my doubts too. Im going to go get a dyno done else where this week and see.

EDIT: I should clarify, torque reduction was set at 3700 but the dyno operator dude was letting off when the car started to bog.
 


There's several issues with the graph.
Doing a little math the car likely made around 450wtq.
But it's tough to say for sure.

Go to another dyno, use SAE correction (or uncorrected if at high elevation) and use an optical pickup. You simply will not get an accurate tq number without it.
 
This video is a perfect example of what I'm talking about.


I rev'd out to ~6500 and the rpm pickup only shows 4 and change.
The faster you spin the more wild the reading gets.
Horsepower is always accurate though, which is why a lot of the time we won't even hook up the rpm signal.
 
You must log in or register to reply here.
Back
Top