motordyne M370 manifold - round 2

TARDCORE · 10-15-2010, 05:43 PM

why do people keep speaking of tuning as if it is so easy for us to do? The VHR is a falesafe for Nissan. VVEL doesn't allow us to do any real tuning. VVEL is also very annoying as most Z owners have realized the slight delay in throttle response. Not this A/F raito bs that we can do and even then, I don't think A/F ratio adjustments on a car with full bolt ons will really make a difference. Tony at FI kinda proved that when they had cleaned up the A/F ratios when the LTH's were being tested. Everytime I return to this site I always see people talking about how after a tune the gains will increase. This isn't an LS7, it's a VQ. I am supprised to see a lot of F/I set ups running for so long without any majoy issues or at least, we haven't heard of any.

efuseakay · 10-18-2010, 01:01 AM

Quote:

Originally Posted by TARDCORE

why do people keep speaking of tuning as if it is so easy for us to do? The VHR is a falesafe for Nissan. VVEL doesn't allow us to do any real tuning. VVEL is also very annoying as most Z owners have realized the slight delay in throttle response. Not this A/F raito bs that we can do and even then, I don't think A/F ratio adjustments on a car with full bolt ons will really make a difference. Tony at FI kinda proved that when they had cleaned up the A/F ratios when the LTH's were being tested. Everytime I return to this site I always see people talking about how after a tune the gains will increase. This isn't an LS7, it's a VQ. I am supprised to see a lot of F/I set ups running for so long without any majoy issues or at least, we haven't heard of any.

Oldschool reasoning. Nissan really stuck one to tuners with VVEL.

Trips · 10-18-2010, 01:13 AM

Quote:

Originally Posted by efuseakay

Oldschool reasoning. Nissan really stuck one to tuners with VVEL.

theDreamer · 10-31-2010, 10:26 PM

Quote:

Originally Posted by TARDCORE

why do people keep speaking of tuning as if it is so easy for us to do? The VHR is a falesafe for Nissan. VVEL doesn't allow us to do any real tuning. VVEL is also very annoying as most Z owners have realized the slight delay in throttle response. Not this A/F raito bs that we can do and even then, I don't think A/F ratio adjustments on a car with full bolt ons will really make a difference. Tony at FI kinda proved that when they had cleaned up the A/F ratios when the LTH's were being tested. Everytime I return to this site I always see people talking about how after a tune the gains will increase. This isn't an LS7, it's a VQ. I am supprised to see a lot of F/I set ups running for so long without any majoy issues or at least, we haven't heard of any.

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.

Trips · 10-15-2010, 06:12 PM

Quote:

Originally Posted by Motordyne

True. Its a real disappointment that the intake and exhaust valve trains are tied together.

There is a ECU dedicated solely to operation of the VVEL. Maybe one day soon it can be cracked.

I think we have a greater chance the world will end in 2012

Paul_S · 10-15-2010, 06:15 PM

Quote:

Originally Posted by Triple's

I think we have a greater chance the world will end in 2012

I hope not the whole of London and the UK have just invested in the olympics!

Valentino · 10-15-2010, 09:13 PM

Quote:

Originally Posted by Triple's

I think we have a greater chance the world will end in 2012

TARDCORE · 11-07-2010, 05:55 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.

Zsteve · 10-16-2010, 10:31 PM

Quote:

Originally Posted by Triple's

I think we have a greater chance the world will end in 2012

We may have to kidnap the Nissan ECU guy that did the engineering and hold him till he fixes us a good tuneable ECU.

10-15-2010, 05:43 PM	#1 (permalink)
TARDCORE Enthusiast Member Join Date: Jul 2009 Location: San Diego Posts: 410 Drives: 2010 Solid Red 370Z Rep Power: 18	why do people keep speaking of tuning as if it is so easy for us to do? The VHR is a falesafe for Nissan. VVEL doesn't allow us to do any real tuning. VVEL is also very annoying as most Z owners have realized the slight delay in throttle response. Not this A/F raito bs that we can do and even then, I don't think A/F ratio adjustments on a car with full bolt ons will really make a difference. Tony at FI kinda proved that when they had cleaned up the A/F ratios when the LTH's were being tested. Everytime I return to this site I always see people talking about how after a tune the gains will increase. This isn't an LS7, it's a VQ. I am supprised to see a lot of F/I set ups running for so long without any majoy issues or at least, we haven't heard of any. 370zBLAST likes this. __________________ XBL:EVENTYDE

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