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I've never seen a GTS with an oversized cooler loose any thing

over a STD core, but as the turbo is usually changed at some

stage a big core is the best option,The GTSt I posted earlyer

has a 700HP core and is better everyware, not saying the car

would not have been better with a 400hp core, just look

at the future plan.

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There are a number of people who have experienced a notable drop in response , even though they pick up horsepower, by fitting overly large intercoolers to stock turbos. Not everything performance wise is there on show on the dyno printout, unless your goal is to win dyno shootouts I would not take them as gospel.

Assuming you do plan to move on to bigger things later fitting a 700HP cooler for a planned output less than 700HP is pretty dumb in hindsight.

Looking at the future plan is all fine and dandy but, c'mon most of these guys still could have 'aimed' at some power figure. As they say ' aim at nothing and you hit it every time'.

Steve, I think you'd agree with me on the idea that a 44gal drum takes longer to fill than a 2L icecream container.

At some point an oversized intercooler loses the race against time to fill the volume in between the turbo and the plenum. The rpm for full boost is the same (therfore no lag, cause the turbo spools at the same engine speed). However the 'time' to achieve engine speed (which is greatly assisted by being on boost) is affected by the larger volmue and distance required by the oversized intercooler.

The stock intercooler is not real flash, even for the stock turbo, but if you are going to spend the best part of $2k on a replacement make damn well sure its the right size.

As you mentioned before the person with the 700HP intercooler would have been better off with the 400HP unit (if thats his eventual target). Maybe the 400HP unit was cheaper as well?

At the end of the day $2k spent on a 700HP intercooler(with std turbo) will put your car firmly in my rear vision mirror, with my poxy standard intercooler, over a 1/4mile, when our cars have the same mods. Get a 300HP unit plumbed up right and it is a different story.

Just want people to think about how important the size matching idea is.

Agree about the BOV too Steve.

BTW mate do you know the flow on the standard unported RB25DET head?

shuto-boy,

a BOV is a BOV, it's just that the factory one is quite good. I don't think an aftermarket one can't work as well fullstop. It's just that it seems difficult to do so (or selction of brand plays a part). If you like the noise thats what you have to do anyway I guess.

got it rev,thanks.Vspec,ure kidding right?how can anyone in the right mind produce that.Must be hot in the usa,they got lots of wierd stuff there.

Right now i got a 12 psi stock turbo+Fmic,going to change ecu soon,ill post some results

13.6

-outlaw racing team-

hate drugs,love racing

Steve,

It makes sense, the factory one has a small air bleed (hole on the underside) people mistake for the factory BOV not holding boost at light cruise due to it being so-called 'too lightly sprung for high boost apps'.

There is someone with a thread about blocking the hole off on the performance section!

rev, piss-off bitch. I'm not a ricer, the sticker are to add power, and the wing to keep my ass on the ground:lol:

I have already replaced the stock BOV, and don't have any issue with my aftermarket one, so I'll keep is, besides I love the sound:P

See'ya:burnout:

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