bump

 

clean maf sensor and check for a booooooost leak

 

I had this problem too. I fixed it by going to colder plugs and gaping them to only .22. In addition I put dielectric grease on all of my connections as well as the ends of the plug wires.

Also, check the connector to the cam sensor. The wires are thin and can easily be damaged because of their location.

One thing that really cured my mileage problem was the throttle body butterfly valve seals. They leaked at only 7 psi.

I have the FP Green, PTE 780s and a Walbro. I am boosting 25psi on 93 pump. No problems what so ever now.

 

what kinda plugs did you put in also what heat wrang were they . the plugs in there are gapped at .26

 

Try re-gapping your plugs down to .22. I bet the problem goes away.

 

well i changed the fuel pump/fuel regulator/and mass sensor car still sputter above 5k. the injector pulse reading at 5000 rpm was at 17.8 . but anyway the car deff drives better with a new maf that has been cleaned out. but im still getting the sputtering. car drives fine up until 5k. can it be my hks dlii??????

 

You said 60k? Did you do your timing belt? Take off your timing belt cover and check the tension of the belt. I've seen loose timing belts cause the same kind of sputtering you're talking about.

 

ya timing belt is fine

 

some people say i need to get a colder plug but i see that everone with an green runs the br7s

 

Could be harmonics in the tranny...just a thought.

 

im leaning more to a boost leak cause car is fine up untill high boost around 5k .

 

Dood, 8 heat range plugs gapped at .022 and a boost leak test. People keep telling you this, you keep asking..... I dont get it...

 

thats what im thinking bc when i had my clutch replaced and i got the car back, the turbo sounded like a big turbo lol! It sounded more of a supercharger sound than a turbo So im thinking there may be a leak somewhere. Im still gona have a fuel pressure test done when i take the car.. I just havent had a chance to do it bc i was moving and busy with work.. Let me know if u find ur problem

 

mpl im getting as boost test done this monday,also i will get ngk 8 heat range plugs this week end

 

new plugs gapped lower are going to be installed today