new turbo, fmic, and 550s, but....

[ZigsGSX97]

i just installed an evo III big 16g, adfx fmic, and 550 cc inj, and i went to drive it for the first time, and i was a little disappointed. It didn't feel much different than the stock turbo other than it took a little longer to spool up. And when i give it boost and put the clutch in, the tach needle goes to 0 for a split second and the oil light comes on and then it goes back to regular idle. i didn't tune my injectors on accoun of i don't know how to use my safc. i'm running 10 lbs of boost. sometimes when i gave it gas, the turbo would spool, but the car wouldn't go anywhere. Anybody ever experience this or know what's going on? WTF

 

[Black95TSIawd]

Put your stock injectors back in. Once you hit boost, your fuel pressure is bumped up at the same rate as your boost. Its just dumping so much fuel that it cant handle it. As i stated before, put your stock injectors back in or get it tuned. With a fuel pump, you should boost 15 or 16psi safely.

 

[DSM90AWD]

Just a helpful hint.. always pressure test your intake from the turbo inlet to ensure no leaks whenever you remove/replace IC piping, couplers, injectors, TB.

And when i give it boost and put the clutch in, the tach needle goes to 0 for a split second and the oil light comes on and then it goes back to regular idle.

Re-route your BOV outlet back to the intake.

i didn't tune my injectors on accoun of i don't know how to use my safc. i'm running 10 lbs of boost. sometimes when i gave it gas, the turbo would spool, but the car wouldn't go anywhere. Anybody ever experience this or know what's going on? WTF

Get a datalogger and read some of the Tech Articles on how to tune.

FYI.. at 10psi you are likely running slower than your factory turbo due to loss of low-end spool. When you get in the 16psi+ range and tuned you will start to feel huge improvements in power

 

[2gGSX]

I agree, get a boost leak test done. Your engine almost dying between shifts sounds typical of a big leak. I believe www.vfaq.com has instructions on how to build one. When this is done your car will feel much better.

 

[mostapasta]

Ya 10psi is around the factory boost level, if not lower and if your tune is out of wack on a bigger turbo its gonna be slower. Like DSM90AWD said just learn how to tune it and raise the boost and it will be a lot faster.

 

[pneumo]

With 550 injectors your SAFC settings should be around negative 15% to Neg. 18%. Start with those settings across all rpm ranges, and on both hi and lo throttle. That should get the car running strong and still be safe.

 

[Tarantula]

When I first nstalled my evo 16G I felt hugh improvement over the stock t-25. I did port my turbo and polished it to help in spooling but its defnately faster than t-25. The fuel injectors HAVE to be adjusted (AKA Tuning) for you to feel something. Running super rich will make you slower. I'm running 650's as well. For starters I hope you have a logger and some form of fuel management (like safc) Put back your stock injectors and keep the boost at 10 psi. tune it than up the injectors after you have learned to tune it Do not up the boost.

 

[ZigsGSX97]

sweet.....yeah i have the safc 2 installed...i'm just waiting to get a data logger or just bring it to get tuned/dynoed by a professional. I actually found my battery is overcharging so that's why my car's almost dying when i put the clutch in. Other than that, i just can't wait to get this thing tuned. I drove it for a while and i did notice a big difference in the turbos.

 

[Thomas91169]

so you have larger injectors, with nothing to tune them, and youre only running 10psi on the evo16g and are wondering why it still feels slow?

get the safc in and tuned, turn up the boost god dammit, and you will shit bricks my freind.

btw i was running -10 across the board for low side and -15 across the board on the high side on my safc. sounds like a good place to start, untill you get a logger so you can tune it more. if youre zeroed out the safc on larger injectors, its going to run like shit. you need to make those injectors work right, cant just slap on injectors and expect the ecu to be able to run them.