I have a feeling it will drop power. Supercharger is not in its optimal efficiency range, not enough boost pressure, because you're running a very free flowing exhaust and HFC's. ART pipes might not make a diff or lower power.

Ok so:
-issues with tune. For some reason Moore can't tweak the GTM tune which I causing problems.
-torque is low ~340 not normal
-450whp but like I said, they can't tweak the tune right now. Waiting on a call back from uprev.

Suggestions?


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Is it because it is password protected or when they make a change it does not save?

Good stuff:
-the pickup is insane and maybe just a little frightening
-it makes a lot of noise. Forget what I said about stealth. If you are within 10 feet of the car at idle you can hear the hiss/whistle and the moment it starts moving you hear that unmistakeable BPV stutter


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Well the nismo should really be significantly faster than the other models. Now that yours is I guess the satisfaction factor is really high. Congrats

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Confirming that the car is now fun as hell to drive. I think I burned half a tank of gas running around today between the MAZOC meet and just driving aimlessly.

Did you ever get the dyno stuff straightened out with your tune,and how much power did you make.

No. Some static between uprev and the GTM pre-flashed tune. Moore is going to work with Uprev to figure it out and give me a call back when we can tune it. Right now I'm running the GTM tune which they tell me is "overly safe" although idle is really rough and i'm running lean through the middle of the power band.

I'm gonna pick up some motordyne ART pipes and delete my HFCs before I blow them out

Question about the Defi gauges if anyone knows. They light up bright when I turn the car on but then go dim and are hard to make out while the car is in motion. Any way to leave them on that bright setting? The innovate AFR gauge is particularly difficult to read in direct sunlight even with the gauge hoods on.

Also my oil pressure nearly bottoms out during idling at a complete stop but is fine if I goose the gas. I'm guessing this is a tune problem since nothing is leaking. I have the undershroud still off of the car just to be sure.

Also the interesting thing about the oil pressure is that it's high when the car is cold and the longer i drive it, it idles lower and lower. The pressure when gas is applied is pretty consistent.

How much pressure do you have at idle?

~20 when cold at idle.
~10 at idle after running around for a bit with the clutch depressed in gear at a complete stop but it fluctuates. I have seen it dip below 10 after driving for a while.

No leakage under the car and no smoke or anything.

I am almost convinced this is a tuning issue because if I goose the gas a little it jumps back up to ~40.

What is your idle speed?

In terms of RPM? I'd have to check. If this is a "holy **** do not drive the car anymore" issue please tell me sooner rather than later.
The idle feels really lean like...on the verge of sputtering a little.

Well the lower the idle speed the lower the oil pressure,when I got my tune from Sam he had my idle set @ 600rpm when I got done tuning mine I set it @ 800rpm
Do you have your a/f gauge hooked up?

I do. It's running lean. I'm farting around in the 14s unless the hammer is down in the middle of the power band but it's not even approaching 10.

I'm ~afraid~ that GTM has screwed me with the tune and that it has locked out uprev and I'm going to have to start from scratch with my uprev license to self-tune unless I want to just deal with GTM's pre-flash nonsense.

My shop has a call into Uprev to figure out the tuning issue. They are pro tuners certified with Uprev, Cobb and several others. Not sure what the problem is here.

I suspect that this is the culprit for my missing top-end too. I'm going to delete my cats and run ART pipes and then re-tune assuming they get the problem fixed at Moore.

Oil pressure increases with rpm's. Afr's should be anywhere from 13(rich end) to 16(lean end) in idle and cruise. In boost I wouldn't want to see it above 11.7:1 really

These cars run best at 11.5-11.0 ,please don't post info that is bad info if your car is running what you just posted please get it checked out and corrected.

There is nothing bad about my info. How long have you been tuning cars? I digress though. I've only been tuning and turbo-ing for three years.

FIY - I was posting limits. Like I would be worried if it was going above or below those limits. But apparently I don't know what I'm talking about.

You don't if you and your buddy have only tuned 1 FI 370 thats not enough to make a that much of a general statement,Dmhenderson worries enough about his car and now it's FI even more so,any info that is not close to on the money is not helpful in this thread.:tiphat:

I have Sam's tune on the car right now but we can't adjust it. It's idling at ~600rpm.

What was so general about my statement? A car will run at idle or regular (non-boosted) driving at practically any afr. You could cruise full lean of you want or dump fuel into the 10's. Should you do that? No but it won't kill it. Yes you want to aim around 14.7:1 for idling and cruising but there are variances that will make that impossible to do that all the time.

Boost is a different story. But why would running .2 more air effect it to the point od being up driveable? Guess what it won't. It won't blow the engine up. Will it be sub optimal? Maybe Idk I dont have enough time on a dyno with the car.

Again I was posting limits, so he could ease his mind. Like "oh its not exactly 11.5:1 no worries" now if it starts creeping past then in full boost then its time to go back to a tuner.

Like I said in the previous post you don't have that much time FI with this car ,when you go tune your buddies single turbo richen up the top end and watch what happens:tiphat:
As far as genral I told you Dm will worry if you don't give him info that is on the money there is nothing wrong with your afr statement but you don't post on this thread enough to understand the full impact of my statement "on the money"

@ 600rpm is partly why your oil pressure is a little low,but you said when you blip the throttle it will go to like 40psi which is fine.

Lol I've worked on DM's car I know he's a worrier.

Then you should have understood this conversation from the beginning.

Just a miscommunication

I'm not sure. I would have to ask Chris (the tuner)

Also still need an answer on this if anyone knows.

The Innovate gauge is the same on mine,as far as the dimming check your ground to the gauge and make sure all the paint or whatever is there is removed to get to bare metal.

Also any opinions on the Motordyne manifold? Worthwhile?

Some it takes a little away from top end but fills in a little in the midrange.

Eh. I'll just keep it and swap out the HFCs for ART pipes. The MD manifold has a bulge if you try to mount the stock engine cover anyway.

:shakes head:

So I woke up this morning after not driving at all yesterday (due to rain). Let the car warm up and drove to work and now my oil pressure is much higher. 40 at idle and 80 when driving.

What gives? Is that a function of outside temperature?