I finally get my downpipe in, its the thunderfab dp/mp combo. And I still have stock catback but anyways my car is running again. I take it out go driving around gun it and i still hav the 5k stutter. Its not nearly as bad as it used to be and heres how it goes.



stock cats stock catback - car just wont go past 5k rpm at all.



gutted cats stock catback - car slowly slowly goes past 5k rpms but its smooth



3inch dp stock catback - car goes past 5k but it sputters for a second and my car does really small and short backfires.



And i checked all my grounds and they're fine in fact theyre aftermarket so i doubt its the grounds. I'm at a loss. I doubt i'm hitting fuel cut too becuase i was having this problem when i still had functional cats.

i still think its your fuel injectors like i told you a while ago

Cmon, any clue?

what can you NOT read?







FUEL INJECTORS



theyre dirty....clean them

i had a problem with my n/a, it would stutter in higher rpm because when i took off wiring harness my injector clips on the secondary rail the fastener broke and they would occasionally fall off. maybe you should check that too..

The clips are broken off but they are still fairly secure on the fuel rail i'm pretty sure. I just put them back on and made sure they were fine.

Run some SeaFoam or Marvel Mystery Oil in your tank. Or something.

well duh







so do this: get new clips and wire those in, now theyre fixed.....and while theyre off, get your injectors cleaned

Why did you change your exhaust? Why would your exhaust fix a car that did not want to rev past 5000?



I think you need to rethink your trouble shooting. I would nail down fuel injectors, but with only primaries firing you should still be able to rev pretty high even with boost.



Does it rev past 5000 in neutral?



There are two things to check:

Fuel and Spark



Do what freestyle said, check the injecotrs, if those check out ok (replace you damn clips, there is nothing worse then having iffy **** when you are trying to find problems and u din't want iffy things to let go when u are trying to strive for performance).



Then Check spark. Check timming, check ignitors, are the coils ok?



I doubt your exhaust really helped

Get some new plugs while you are in there!

I got the downpipe because i thought that it might be clogged cats.



My car revs past 5k easily when in neutral and right after i start the car up i can rev past 5k but after probably 30 seconds of driving it starts to stutter. The thing is with the clips is that they are secure in the injectors, they were fine before but i broke one off when i was taking it off so i really doubt its the clips. I still don't really see how my injectors being clogged is causing the whole won't rev past 5k issue though. I always comes in at 5k rpms no matter what gear i am in.

ok





so dont bother to fix your injectors.....have fun



















i dont get it , you ask for advice and you completely ignore it

Your plugs are fine right Dramon?

When was the last time ignition components were replaced? Sounds spark to me.

TPS would be one of my first bets.

you want the guy to get them cleaned today?



let others give thier advice as well

yeah im not saying to ignore other advice...the only things so far are injectors and spark taht could cause a problem



i dont see how tps could be in error for this



if theyve never been cleaned then its worht it anyways for the time being...



just my opinion as ive never seen the car in person

you need to relax and stop getting pushy with your advice https://www.nopistons.com/forums/pub...1047683246.gif

When the TPS starts to fail, the car acts weird. Sometimes you can't rev over a certain RPM, sometimes it stumbles constantly, and sometimes there aren't any symptoms at all.



I'm not saying it may be out of adjustment, I'm saying it may be totally shot.

maybe so...or maybe its that he talks to me all the time about the problems he has and we talk for a good hour



and then i offer an answer and he completly ignores it and posts here

maybe he thinks your a idiot?



im just trying to help out here



Christi used to do the same ****

meeeeeeeowwwww





dont mention christi and me in the same sentence yo

Well, last time you gave me advice i went through all of the stuff and pretty much did all of it except for injectors. I do listen and i really appreciate it. You and kevin have probably been the two most helpful people with my car since i've owned it. I'm just hoping its something other than injectors because that means i have to take everything off that i just put back on freaking again which will bring the take my UIM/intercooler off count up to like 8 for the past freaking month. Also posting here gives me something to go back and reference as i really dont like saving AIM chat logs and such.



Another problem i have that might be TPS related is that my car when i first start it up holds a fine idle thats a bit high its about 900 rpm. But then when i go driving it goes up to at least 1500 rpm. And, last night it was going up to 16 then dipping down to 12 then back up to 16 etc etc.