can anybody help

[awdtsi90built]

not sure what the problem is. car does not leak boost. the timing belt is on right, plus the light reads right on 5 before. the car runs great all the way up to 4500 rpm, and like in first if it spins them it revs out to 7000 rpm. if it dont it falls out at 4500 like every other gear.

 

[sniver]

Spark plugs/ plug gap can some times cause issues like this, however its more consistent, and is usually worse with more boost.

Ever check your ecu out for leaking caps, do you ever here a relay clicking when it happens?

I need ALOT better explanation of this. I can't hear what is sounds like, feel it, nothing. Describe it better please.

 

[dboyle23]

I really don't understand what you are saying. Something goes wrong at 4500 rpms? It would help if you could elaborate. Also, and I am not trying to offend you, if you use better English/punctuation it will be easier to understand.

 

[awdtsi90built]

its like it has a limiter on it. thats the best way to explain it. seems like timing but its not

and it back fires a lil

 

[Tyeler18]

What psi are you boosting to and what are your mods?

 

[razrman8]

Yes, answer those questions.

 

[sniver]

its like it has a limiter on it. thats the best way to explain it. seems like timing but its not

and it back fires a lil

Your still not explaining it well...

Why isn't it timing? What have you done so far to ensure that?

So your in 1st and you floor it, and it goes to 7k, then in 2nd, at wot it sputters and craps out a 4k, adn 3rd you have no issue, and 4th, it choke up and studders again?

what about part throttle, can you litlghlty accelterate to 7k, or it must be qucik, or does it need to be wot?

what about at idle , will it hit 7k, or no?

What did you do to set the base timing, what fuel(how old), plug type, plug gap. Are there any fuel systems mods, and you didn't answer my ecu question.

 

[razrman8]

Also , on top of Sniver's questions, are you running a tuning system at all?

 

[awdtsi90built]

stock computer, stock fuel system, stock turbo. Also it studders threw every gear (1-5). except in first if u floor it and the tires break free. i have had it apart far enough just to check to see if belt is on right. i put a timing light on it so i kno it sits at 5 before tdc

revs out fine in neutral, if u barley push the gas in any gear it will rev out. cant even give it a quarter throttle.

stock boost.

good fuel, running 93 octane. did boost leak test turned out good, held over night

autolights double platinum gapped at 0.28