7AT w/ I-H-C-E Dyno'd

DIGItonium · 04-11-2009, 11:24 PM

How's your AFR? Also, did you gain or lose response. I'm wondering if headers + HFC + exhaust would have any adverse effects with torque and throttle response.

I may do the same setup, but leave the intakes stock.

wstar · 04-12-2009, 12:25 AM

Quote:

Originally Posted by semtex

I respectfully disagree with Crash on the gearing not making much of a difference, at least for the 370Z. I say this because when I took mine to a DynoJet, the guy did pulls in both 4th and 5th.

Hmm, maybe I'll go back and get a 5th gear run on the DynoJet too then.

Quote:

Originally Posted by DIGItonium

How's your AFR? Also, did you gain or lose response. I'm wondering if headers + HFC + exhaust would have any adverse effects with torque and throttle response.

I may do the same setup, but leave the intakes stock.

The AFR on the graph he gave me was right on 14.0 at 4k RPM (first time it's stable, I think that's where he punched the throttle at honestly), and gently glides down to what looks like about 12.5 at 7.5k RPM.

By response did you mean throttle response? It revs unloaded a lot quicker than it did before, but I think that's pretty much a given. I don't think I've lost any torque at useful RPMs, although I think I've dropped some torque in the very low RPMs (3k and under -ish), just based on feel when driving.

DIGItonium · 04-12-2009, 11:31 AM

Quote:

Originally Posted by wstar

By response did you mean throttle response? It revs unloaded a lot quicker than it did before, but I think that's pretty much a given. I don't think I've lost any torque at useful RPMs, although I think I've dropped some torque in the very low RPMs (3k and under -ish), just based on feel when driving.

Yea, throttle response. I spend more time driving under 3k than anything else, and will go all out once in awhile. There's no surprise with the Z hauling a$$ to redline after a brief late start. HAHA!

The mods are probably overkill for my everyday driving, but it's all in good fun. I wonder how much torque we can recover from having a tune.

This is definitely something to work on this July during my 2-week company shutdown.

04-11-2009, 11:24 PM	#1 (permalink)
DIGItonium A True Z Fanatic Join Date: Jan 2009 Location: Kansas Posts: 3,800 Drives: 09 Z34-TT 6MT Rep Power: 44	How's your AFR? Also, did you gain or lose response. I'm wondering if headers + HFC + exhaust would have any adverse effects with torque and throttle response. I may do the same setup, but leave the intakes stock. __________________

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