Hey guys,

My bro has a 2004 sti which is stock standard. Whilst in the passeneger seat 2day and him being hard on the throttle in 2nd (~5000-6000rpm)it felt as if the car hit a boost cut/fuel cut as it hesitated violently then got up n running again into 3rd and felt fine. Apparently thats the 3rd time its done this since owning hte car for 6 months. Surely a stock car cant be hitting boost cut? or could it be something else?

Also when will hte rev limiter kick in? My initial reaction was that he'd hit the rev limiter but he assures me he was between 5000-6000rpm. He revved it out to ~7600 later on and says hes hit 8000rpm once and no rev limiter ('soft' limiter?). Surely it should kick in before then? I know that is revving it way too high before some1 says something.

Any avice appretiated
Mike

Is it modified? My car did something similar with an untuned turbo-back exhaust.

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R34 GT-R Vspec II Nür - Black Pearl

Stack that Cheese

rev limit - 7500rpm
was car moded by previous owner and reverted backto stock upon sale? may have connected boost lines wrong or left out olive.....

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It definitely wouldn't hit 8000rpm????? Rev limit is about 7200rpm. Does he have any mods at all exhaust?

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and what was the resolve of this ??

The car is stock standard quiet as a mouse Even looking at the exhaust its a stocker.
Performance wise it goes well. My mate has a modded (vf23 + computer/TBE, fuel pump etc etc)00 bug eye which has a little more top end so the car is definetly a stocker.
I saw 7500rpm thinking wat the...
Think i'll take it for a spin when he gets home to see 8000rpm with my own eyes.

Hi voltage: Whats an olive? apart from the one that grows.

thanx for the lightening fast replies

TUNEDWRX - Get it tuned and make the most of it.

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R34 GT-R Vspec II Nür - Black Pearl

Stack that Cheese

Is the cruise control light flashing after this happens?

Sounds more like its hitting the rev limit if he thinks it revs to 8k

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[COLOR="Red"]I have the right foot of Subaru death![/COLOR]

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365hp and 515nm

New Beast to arrive April 2015 - 365hp, 450nm, 0-100 in 4.4sec. AMG Goodness!

there is an "Olive" in one of the hoses from the turbo. it will look just like a joiner mid-hose. interestingly enough, someone might think it's a joiner and remove it to put a tee piece in for a boost gauge.?!?!

03/04 STI's have a rev limit of 7500rpm as others have mentioned.

was it a really humid day? we've had a couple of those. and if it is, the ECU will retard timing, i'm not sure if it would retard boost also, wouldn't be surprised... if the knock sensor picks anything up.

it sounds too much like he's hitting the rev cut though.

How about crap petrol...?

I had the same issue you're having happen to me, but as Huy said it was when a 3" tbe was fitted and the car was not tuned.

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