Help Me No Car For Over A Month Now!

[ocksrt4]

i recently installed a bunch of aftermarket parts on my srt-4 and i have a huge problem! first off i had my local tuner shop put in the following:
-stage 3 forced performance turbo
-O2 housing from exhaust depot
-750 rc's
-crane 14's
-extrude honed intake
-mp 62mm throttle body

now i had a problem on the dyno where i was goin way to lean and that ended up being the tps sensor. then we fixed that and we ran into another problem my car wont go over 5000rpm when the boost it at 16psi or over. at 12psi i can get to 6000. i personally think its the cam sensor which we are changing tomorrow or maybe the AFC neo that i am using. we have changed the map sensor which shouldnt have mattered anyway and the other sensor on the throttle body too. has anyone had this happen?!?! i need help please!!! thank you

[ocksrt4]

and i forgot to mention i do have all the other supporting mods that you can think of and i have a stage 1 comp in it and we did try changing it to stage 0 but got nothing. changed the map sensor on the intake and nothing. i need some help!!! what do you guys think would effect the RPM range and only allowing it to go all the way on low boost? havent changed the cam sensor yet but i think he is tomoro. and he will be checking the knock sensor. im losing my mind!!!! thanks guys

[ocksrt4]

anyone? anything?

[HCCAFan]

We need an entire mod list. What are you using to tune with?

[ocksrt4]

forced performance stage 3 "green" turbo
02 housing from E.D.
tial 38mm wga
3" turbo back w/ high flow cat
crane 14
rc750
walboro 255 pump
perrin rail
aeromotive fuel reg w/ return
port and polish intake
62mm throttle
afc neo
AGP intercooler w/ hardpipes and type H RFL BOV
hallman boost controller

i think thats it

dynodynamics dyno tune w/ AFC neo

[HCCAFan]

No return line?

[HCCAFan]

And what happens when you get to 5000?

[ocksrt4]

ya i have a return. when we are bringing the rpms up the power is climbing nicely and then at 5000rpm nothing no more power no more rpm range just stuck with the pedal to the floor nothing more!

[HCCAFan]

The car refuses to go any higher like it's on the rev limit or it starts popping or it will rev higher but stops making power at 5000? Just trying to figure out what is limiting it.

[ocksrt4]

its ok i love that your asking the questions this is the 2nd post i have up and you are the first to try to help. it hits 5000rpm and the power stays the same and it isnt like a rev limiter its like its glued there at 5000. it just wont go higher no more power or rpms. no popping or bouncing sound either just the sound of 5000rpms hehe loud

[Ghowie]

did you plug the fpr on the fuel canister?whats your base psi and how much boost?

[HCCAFan]

Really sounds to me like your cams are outta whack. Is that possible? Did you take the timing belt off for anything or put new cams on?

[ocksrt4]

i think it has to do with the cams too. i didnt do the work on the cams so i dont know the details i will ask the guy at the shop who put em in. also the wastegate has a .9 spring but i doubt that has anything to do with it.

[HCCAFan]

Quote: Originally Posted by ocksrt4

i think it has to do with the cams too. i didnt do the work on the cams so i dont know the details i will ask the guy at the shop who put em in. also the wastegate has a .9 spring but i doubt that has anything to do with it.

Well how much are you boosting and what's your A/Fs when it hits 5K? My car was falling on it's face at 6200 and only making 300HP with mods that should be able to make 500HP and adjusting my cams has made a huge difference in the way the car feels. I have not gotten it back on the dyno yet to see what kinda power it is making and I still need to get a final tune flashed into the SCT to be sure it was the cams.

[1LAPSRT]

What about your throttle cable? Is it free to move the whole way? Maybe it's maxed out in that position and not fully opening the butterfly on the TB?

Maybe...