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Well, here it is...16mpg consistently on an sr16ve. NO matter how i drive, i get between 16-18 mpg all the time with mixed highway/city driving. We have tried everything you can think of practically to fix this problem.
- Ecu has been programmed twice to correct the problem = no change
- Full tuneup has been done = no change
- o2 sensor changed = no change
- Maxima maf wiring checked and switched then switched back = no change
- Exhaust leaks fixed = no change
- injectors checked for leaks = no leaks = no change
- Oil changed on regualr intervals = no change
- Wheels checked for brake drag - one wheel is dragging - next culprit to check
:: She runs strong and pulls hard to redline, vvl engagement at 5300 for in/ex.
:: She puffs out big clouds of black smoke when vvl is engaged and my back bumpter is covered in exhaust soot.
- I dont know what to check anymore. The brake drag is going to be the next thing i look at and i will also be getting an fuel pressure gauge. If anyone has any ideas or clues....im open to them.
what do your plugs look like? have you checked your fuel lines for leaks? Have you checked the TPS voltage to make sure its within spec? Is the ECU throwing any codes? Has the motor been compression tested? Go to the dyno and get an a/f vs rpm printout to see if it is running rich all over or just in the VVL. Its its all over then you can fix it with an fpr and tuning i think. 16 MPG is pretty bad, i get around 22 - 24 in my sr20ve. Not sure what else to say, i dont have any experience with the sr16. good luck.
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Everything must go... im retiring for a while.
what program are you running by the way? a sr16ve ecu? a custom DE ECU reprogrammed for the sr16? a modified sr20ve program? What size injectors is it set for?
I have just the fuel pressure regulator that comes with the sr16 on the fuel line...i still have to get a fuel pressure gauge to see what shes reading at.
My question is this.....do the sr20ve and sr16ve have different fuel maps??
Like i said, im currently running an sr20ve program and i previously had an sr16 program and i still ran just as rich.
Last edited by NismoNx2000 : 12-02-2005 at 10:25 AM.
As per sr20sleeper's advice, did you check the TPS voltages?
__________________ VVL
'94 SE-R w/ VE ....sale pending "Relax, alright? My old man is a television repairman, he's got this ultimate set of tools. I CAN FIX IT."
I'm getting pretty bad gas mileage myself - not sure if it's as bad a s 16 mpg - but my car's been a gas-guzzler ever since the swap -
However, I also have a few things to blame - such as my current DE ECU..
I ran my car at 100 mph for 65 miles. I have beat on it this whole tank. I will still get 24. 180,000 miles on the motor too. I got 30 on the last tank! I bet if I baby it I can get 32!
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05 Tacoma 4x4
91 White SE-R built de coming up
That is insanely low mileage.... My fpr broke (pressure always up) on my turbo setup and was just dumping fuel to a point where it wouldn't idle at all and I still got 21 mpg.
dont know, thats what andreas told me i checked it and it was at .47 "not in spec" and changed it to .50 the cars gas mileage shot back up in the high 20's from 19
VVL 
