e car wont go past 5 lbs

[afmafia]

my sr wont go past 5 lbs of boost . i ran my car open down pipe and my car went to 15lbs no problem . i put the downpipe back on and my car wont go past 5lbs of boost . what do u guys think is wrong any info is appreshated thanks

[mmashburn]

is there a midget stuck in your downpipe?

so anyways.. be more specific.. what downpipe do you have on there? stock, greddy, ebay??......

[afmafia]

i have a cuton 3in turbo extention . prescion sc50 turbo, greddy downpipe,magnaflow highflow cat ,apexi gt spec cat back . someone said i could of melted what do u guys think also one guy said if its not the cat it could be my wastegate ??????????/?

[mmashburn]

so where is your wastegate getting it's signal anyways? this may be the dumbest suggestion on the face of the planet, but this is what i would do:

disconnect the wastegate signal so it wont open at all.... then make sure you keep your eyes on your boost gauge at all times.. see if you can make more that 5 pounds of boost...

can anyone verify that this might work..

and also could it not just be a boost leak somehwere... do you have fmic or side mount?
Modified by mmashburn at 5:40 PM 9/19/2005

[afmafia]

its getting it signal from boost controller teeed off a vacum line to the boost controller to the wastegate . i think i have a bad or clogged cat cause i have a magnaflow high flow cat and i didnt punch out the guts. sometime my car will run rich and shoot out some flames what do u guys think .

[afmafia]

i mean from a vacum line then split to blow off valve then to boost controller then to wastegate sorry for the confusion. i ran it this way since i had the sr in it and it ran fine all the way up to 18 lbs

[mmashburn]

im just trying to help you trouble shoot.. but why dont you just try taking the boost controller off... also... if your running rich it can clog your cat.. i have a test pipe on mine, but i dont have to worry about emmisions where im at either

[afmafia]

i disconnected my boost controller and it still wont boost past 5lbs i have a front mountwith a greddy type r blow off valve .

[mmashburn]

didnt you say you thought your cat was clogged... cant you just leave the downpipe and the exhaust hooked up, but just take the cat out.....

[afmafia]

ya who knows well see tom the cat is comming off

[mmashburn]

it's gonna be really loud coming right off the downpipe, but at least you can troubleshoot and see if it's the cat...

[afmafia]

i already ean my car with the downpipe off and it was real loud but my car did boost to 15lbs no problem . who knows tomm im going to cut out the cat and do a test pipe =]=]