black_cherry

can someone help me. i just turboed my car. i have a top mount with turbonetics evolution waste gate.with 9psi spring. its a brand new t3/t4 ebay turbo. 50 trim. greddy type rz BOV. 440cc injectors. and 1 step colder irdium plugs. my gap spec is at .32 im having a problem going into full boost aka just going into full throttle period. everytime i try to hit the gas it acts as if it is detinating. u can hear it building boost then it just wont allow me to go full throttle. half throttle i have no problems. i wish i could describe the noise it is making. can someone help me. i have a threadstone vaccum block that i have my boost gauge, and BOV i tapped them into the brake booster.the waste gate hooked into my throttle body. please someone help so i can get this thing tuned. i have a greddy ultimate installed but i cant tune it cuz of this one problem. i brought it to get tuned but he said he couldnt help me because my car was acting like this.

speedy000

iTrader: (2)

sounds like it could be a big **** boost leak. check all the couplers and make sure everything is tight

trd07tc

iTrader: (-1)

Post mad piczzzzz

DeAnzaJig

what readings are you getting on your wideband when this happens?
do you have any cel codes? if so what are they?

etoomey3

Agreed! Pics!

johnnyb305mia

checkboot leaks as speedy mentioned above what is ur boost gauge reading when ur sitting at idle? also r u tuned?

PeArLwHiTe07tC

iTrader: (2)

if its not a boost leak, than im more than likely sure that its due to the fact that ur not tuned. the factory ecu will not like that amount of boost pressure at all. thats way too much boost for the ecu to try and compensate for. imho id say try and find someone to send u a map for a similar setup and see if that helps. i had my car on stock ecu and injectors w a 4psi spring and that worked fine, i threw my mbc in just to set it and had it set at 10 psi and the car just fell on its face and the car leaned out like crazy. it couldnt provide sufficient fuel to compensate for the boost. im not sayin this is the case, but it may be a possibility.

johnnyb305mia

well if ur not tuned like ^ mentioned then there is ur issue right there...u will b running terribly lean n u WILL blow ur motor i due time how much time idk but sooner rather than later if u keep running ur car like this my advice to u would be go and get tuned n everything should be good well good luck n happy boostin keep us updated

black_cherry

i got tuned and it still did it but after a second it would launch. so i took it back the next day and we did a street tune. he kept changing things up and now its all good. spinning tires all day. i am having one problem though. im at 277whp. he said at 5 grand my fuel pump cuts out. that would be because i need a better one. mine is stock lol after i get the fuel pump and retune i should be at 300 wheel. pretty good if u ask me anyone got a walbro 255?

PeArLwHiTe07tC

iTrader: (2)

ull def make 300whp w a fuel pump. u may be able to make more. i was stuck at 260 til i put a pump in. now im at 299hp and 270tq.

johnnyb305mia

i made over 300 on stock fuel pump but i had 550's sooo i dnt think its ur fuel pump although it could be jus food for thought though

Syldrin

iTrader: (1)

my stock fuel pump only got me to 280 w/ 700's. most of us run a walbro 255 it gets the job done and well

johnnyb305mia

i agree i have one now i wasnt sayin it wasnt the fuel pump it may b but jus throwing out my previous situation

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thendawg

iTrader: (2)

On pump gas unless you have some retarded big injectors, youll run out of fuel by 300whp. Only reason you might get a tad more on very large inj (1000cc+) is b/c they'd still be able to flow a decent amount when fuel press drops to 30 psi or so on the stock pump.