upgrading manifold..
Those are not EGT holes - they are anti-lag ports. Why are people recently saying these are EGT holes??? 
Also, the Megan tubular header is known to crack - there's really no reason to spend money on it when porting your stock costs less, makes more power, and WON'T crack.
Also, the Megan tubular header is known to crack - there's really no reason to spend money on it when porting your stock costs less, makes more power, and WON'T crack.
my mechanic said he can make an adapter to fit the the egt probe into that anti-lag port so let's see if it is true. sorry about the confusion. and yeah i have heard many cracking but mine hasnt cracked yet "knock on wood." it has just discolored like it does after awhile.
why would an intake manifold not benefit a car at 300hp, but it will benefit a car at 600hp?
i'm sorry, but i disagree with your assesment warr. i think an intake manifold can change the characteristics of even a stock turbo car. longer runners you migt see more torque. smaller plenum, you'll see faster throttle response. bigger plenum, slower response but less pressure drop and smaller pressure pulses. just like well designed cams can improve performance, a well designed intake manifold can improve performance. the stock manifold certain does the job well, and for most i don't think the 800 dollar price tag would justify the need to play around with the power band. so in that respect, i agree with you warr.
i'm sorry, but i disagree with your assesment warr. i think an intake manifold can change the characteristics of even a stock turbo car. longer runners you migt see more torque. smaller plenum, you'll see faster throttle response. bigger plenum, slower response but less pressure drop and smaller pressure pulses. just like well designed cams can improve performance, a well designed intake manifold can improve performance. the stock manifold certain does the job well, and for most i don't think the 800 dollar price tag would justify the need to play around with the power band. so in that respect, i agree with you warr.
The intake manifolds I've seen like the VSR's made by AMS are a top end unit really only seeing true increases in potential where the air flow becomes substantial. The racing manifolds seem to drop efficiency at low rpm's resulting in very minor power loss at low rpms then make up for it at the higher rpms by providing an increased flow, this is likely due to the intakes velocity at the low rpms in comparison with the smaller stock unit.
Honestly for the mildly modified a simple clean up of the ports on the stocker is probably the best choice,as a plus porting your stocker is pretty cheap.
Just my opinion though...
EDIT:
Thought I'd show you a AMS dyno graph with stock vs AMS VSR intake car is modded with a gt30r and other goodies like their new 2.3RR engine kit. Notice the slight drop at the down low then the sudden pick up at higher pressures.
Last edited by RoadSpike; Feb 2, 2007 at 10:06 PM.
It is, however, note where in the rpm range the improvement in power occurs.
In short, this indicates that the larger the turbo with respect to displacement, the more potential such manifolds deliver. Conversely, the smaller the turbo, the lesser potential they deliver, simply because smaller turbos run out of steam just when the manifold reaches the rpm range where it begins making enough difference to justify the price.
Taking such observations in context is important to wise spending. The AMS manifold is a very nice piece (I own one), but in no way shape or form is it something that should be even remotely considered by the originator of this thread.
In short, this indicates that the larger the turbo with respect to displacement, the more potential such manifolds deliver. Conversely, the smaller the turbo, the lesser potential they deliver, simply because smaller turbos run out of steam just when the manifold reaches the rpm range where it begins making enough difference to justify the price.
Taking such observations in context is important to wise spending. The AMS manifold is a very nice piece (I own one), but in no way shape or form is it something that should be even remotely considered by the originator of this thread.
maybe he can post his dyno compare. I would imagine he started experiencing some of his 20whp gain was experienced @ 7k or so.
i beleive his mods are evo 9 turbo, megan o2 housing, hks 272/272, oem gears, hks intake, 3" exh, test pipe......720 injectors
he tunes his own car & a lot of others in so. cal., so i am certain both configurations were given the same attention to detail towards making reliable power, especially since he tracks his own car.
yes, you would most likely need a re-tune.
i like the looks of the airhorns within the weapon -r intake + i beleive you can still use the oem uicp, unlike other makes.
if i can find a sweet deal on 1, i would buy a weapon r intake.
I know this guy, vboy on evomis his sig i beleive, anyway he installed a weapon-r intake & picked up 20-whp. not sure what octane he was using when the gain was experienced on the dyno.
i beleive his mods are evo 9 turbo, megan o2 housing, hks 272/272, oem gears, hks intake, 3" exh, test pipe......720 injectors
he tunes his own car & a lot of others in so. cal., so i am certain both configurations were given the same attention to detail towards making reliable power, especially since he tracks his own car.
yes, you would most likely need a re-tune.
i like the looks of the airhorns within the weapon -r intake + i beleive you can still use the oem uicp, unlike other makes.
if i can find a sweet deal on 1, i would buy a weapon r intake.
i beleive his mods are evo 9 turbo, megan o2 housing, hks 272/272, oem gears, hks intake, 3" exh, test pipe......720 injectors
he tunes his own car & a lot of others in so. cal., so i am certain both configurations were given the same attention to detail towards making reliable power, especially since he tracks his own car.
yes, you would most likely need a re-tune.
i like the looks of the airhorns within the weapon -r intake + i beleive you can still use the oem uicp, unlike other makes.
if i can find a sweet deal on 1, i would buy a weapon r intake.
the oem intake dyno plot's boost spiked up to 1.6 bar & the weapon r run spiked up to 1.5 bar!
Last edited by Aby@MIL.SPEC; May 27, 2007 at 11:04 AM.
i was told that the weapon-r manifold already has a 65mm inlet opening.
i see them going for ~500-600 new, but they can be had for less.
charlie actually has another 1 of these weapon-r manifolds for sale, as he aquired 2 somehow.
he wants $400- used. look for a weapon-r post by vboy in the classifieds.