motordyne M370 manifold - round 2

esfourteen · 11-03-2010, 10:41 AM

Quote:

Originally Posted by 98intrigue

Yes, my tuner said that he's seen 12.8 to be the sweet spot. I remember looking at the UpRev window and seeing the fuel right st 12.8, so I'm not sure why the graph shows 13.2.

it was probably reading from the exhaust tip which usually reads a bit leaner

Endgame · 11-03-2010, 10:43 AM

Quote:

Originally Posted by eddieconfetti

Blame the government for the stupid car rules we have!!!!!!!

Blame it on the a-a-a-al-al-al-cohol....

Staples · 11-03-2010, 08:13 PM

Quote:

Originally Posted by 98intrigue

Yes, my tuner said that he's seen 12.8 to be the sweet spot. I remember looking at the UpRev window and seeing the fuel right st 12.8, so I'm not sure why the graph shows 13.2.

Quote:

Originally Posted by esfourteen

it was probably reading from the exhaust tip which usually reads a bit leaner

That's absolutely correct... When you have cats and you're measuring air/fuel from the exhaust tip, more air then fuel is going to make it out of the car which is why the graph will read leaner because the tuner is compensating.

Daishi · 11-03-2010, 10:02 PM

If you don't want the manifold how much would you sell it to me for?

98intrigue · 11-04-2010, 02:32 PM

Quote:

Originally Posted by Staples

That's absolutely correct... When you have cats and you're measuring air/fuel from the exhaust tip, more air then fuel is going to make it out of the car which is why the graph will read leaner because the tuner is compensating.

Duh! Thanks for making me remember

. This is my first time having my car on the dyno since my turbo G35, which I'd only see the data logs from my Utec that measured the AF right at the catless downpipe.

TARDCORE · 11-07-2010, 06:55 PM

Quote:

Originally Posted by theDreamer

Why, what is so extreme about our tuning?
The only item we are unable to adjust right now is VVEL, which really has been a zero issue with basic forced induction. Now, if you want to lower the compression ratio, build the motor, or something else extreme then VVEL will be a factor but really it is a non-issue.

Quote:

Originally Posted by christian370z

Plus, everytime I see someone say that VVEL is not going to be cracked, I remember how many thought that the R35 GTR might be untunable with all the coding Nissan built into the ECU but obviously that was blown out of the water once the aftermarket started picking up with those cars.

To my understanding, you can't throw a "Stage 3" setup that is supposed to add 60% of the stock power on a car with a high compression ratio and expect it to run great without proper tuning of timing/valves. Basic F/I is fine and understandable but how many miles do you could be logged without inevtiable issues, not leaks, but serious internal issues. Unfortunately the 37VHR is new and has not been blown and really tested that much for us to really know the limits.

The GTR is a different car. F/I from the factory and tuners seemed to take much much more interest in it than they seemed to with the 370Z/G37.

theDreamer · 11-07-2010, 08:51 PM

VVEL is very minor, if a problem occurs it is because a physical part had more wear from the forced induction not because we could not tune VVEL. If anything, go with an aftermarket tuning ECU setup, haltech, HKS, etc.

11-03-2010, 10:02 PM	#34 (permalink)
Daishi Track Member Join Date: Jul 2009 Location: NJ Posts: 683 Drives: 09 370z 6Speed Rep Power: 17	If you don't want the manifold how much would you sell it to me for? __________________ Cobb Tuned \| Injen Intakes \| Fast Intentions Long Tube Headers \| Fast Intentions TDX Catback 18" Resonators CF Mufflers \| Tommy Kaira Hebi Bebi Shift Knob \| 19x9.5/19x10.5 Five Axis Design S5:F w/ 245/40/19 - 285/35/19 Hankook Ventus V12's

11-07-2010, 08:51 PM	#37 (permalink)
theDreamer A True Z Fanatic Join Date: Feb 2009 Location: Texas Posts: 30,879 Drives: 370z Rep Power: 4211	VVEL is very minor, if a problem occurs it is because a physical part had more wear from the forced induction not because we could not tune VVEL. If anything, go with an aftermarket tuning ECU setup, haltech, HKS, etc. __________________ theDreamer's Z // Fast Intentions // Uprev // GTM // HKS // TEIN theDreamer's Silvia // URAS // GREDDY Houston Zs // Facebook // Twitter // Instagram

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