turbo problem!

[evoracer200586]

I have a big T3/T4 turbo on my 1990 Eagle Talon. The question is, when I give it full throttle, and the boost starts kicking in then car starts bogging down, what do you think it is? Also I have a upgraded fuel part: fuel regulater set at 60 psi on stock injectors.

 

[Eclipse98_RS]

You might want to upgrade your fuel injectors to a bigger injector like a 550cc otherwise your are going to overrun your stock injectors.

 

[Armours]

you are probably getting fuel cut

 

[kenamond]

Stock fuel pressure on a 1g is like 38psi or something. If you have no way to tune out the extra fuel you'll get at that pressure (60psi), you'll run pig rich. Check www.vfaq.com to set your fuel pressure correctly, turn your boost down to 15psi or so and see how it runs. Forget if your profile included a logger, but get one if you don't have it. You'll be limited by the stock injectors or fuel cut, so you'll have to figure out how much boost you can run - and a logger helps with that.

And if you haven't done a boost leak test recently, that wouldn't hurt either. You want all that air going into the motor.

 

[ricktb]

I'm no expert on these things, tho maybe this can help..

Today I was boost leak testing my intake system, and I had to move my car a short distance while the MAS airflow sensor was unplugged.. The car runs fine until I give it too much gas then it really bogs down until I let off the gas. Once I plugged in the sensor back in, it runs great again. Maybe this sensor is giving you grief? just a guess.

 

[evoracer200586]

Hey, thank's for all of the help. I really appreciate it! I'm going to try the boost leak test and I'll look up www.vfaq.com -thanks.

 

[evoracer200586]

yeah, It does lag! pretty bad. I'm gonna try turning down the fuel pressure, and see what it does...

 

[olmytsi]

You need at least 650s
You need a fuel pump (walbro 255 preferably)
You need a maf other than your stocker (too small for high airflow)
You need a way to tune like dsmlink or a chipped ecu + afc
You need to set the fuel pressure at 37 psi, not 60

 

[TiradoCC]

fuel cut. Upgrade your fuel injectors and your also going to need something to tune the extra fuel with. Like a SAFC.....

 

[evoracer200586]

thanks, and I have the walbro 255 fuel pump in the car already.

I have one more question, can i tune down the fuel pressure while the car is running? I have the fuel regulator with the gauge on it.