Just dynoed my car @ 387rwhp

[Guest INASNT]

As sydneykid said have u called the pope yet???

[Cubes]

If you have had them flow tested then obviously the fuel pressure is way way over the top or the dyno is slightly out by 30-40rwkw.

250-260rwkw is pretty much max from what I have seen from the std. RB25DET injectors with a decent/safe amount of fuel pressure pumped in.

[RNS11Z]

Just got back from the dyno with my new injectors, 660cc. I made 421rwhp. Will try scan dyno print. Car will be at Jamboree.

[Steve]

Congrats, thats more like it. What sort of boost?

[RNS11Z]

Too much boost, lol. Next step is cams and cam gears. It dies off top end. We could have pushed it more though i called it quits after 3 hours on the dyno. Maybe tune it with C16 next time.

[rob77]

Originally posted by INASNT

u cant be serious, 6 x 370cc injectors and 280rwkw dont add up.

u r kidding yourself if you think they are the stock ones.

gtst-vspecs car is making 368rwhp with stock injectors and I think I will make near the same once I get my wolf3d ecu in.

[Guest INASNT]

I got 550cc injectors in mine at the moment (waiting for the new manifold and turbo to arrive) and with around 200rwkw sometimes if i change at 7000rpm, the power fc shows the injectors flowing at around 55%. Now the 550cc injectors are 130cc bigger than the stock ones each so do the maths.

[Steve]

INASNT, I know where you are coming from, but this is I believe one of those times that reality and the hypothetical world dont match.

With stock fuel system I was getting up to 89% duty cycle with just over 200 rwkw.

BOOSTD is at 266rwkw with stock injectors - just upgraded fuel pump, he doesnt even have an upgraded fuel pressure reg. With increased fuel pressure and a good tune it would appear that the stock injectors can go a fair way.

Too many people exeriencing otherwise to not except IMHO

[rbs13]

sydneykid.. back on page two you showed some rpm vs power results for rb20s and rb25's what turbo was this relating to???

[RNS11Z]

Quick question, I just found a exhaust leak on my car. Its were the turbo joins to the exhaust manifold. Its fairly big. As the turbo has moved from the manifold. Could i lose power from this leak? As i said, its faily large (guessing the size but about 1x3cm - rectangular size, possibly bigger)

[Steve]

:uh-huh:

will have all sorts of nasty side effects. Manifolds are usually carefully designed so as to create as little turbulance as possible - turbulance can cause unwanted back pressure and cause exhaust gasses to revert into the cylinders earlier than if it wasnt present which isnt a good thing at all. And also it is probably increasing lag, as the gasses wont be going out through the turbine.

Cant really quantify the losses, but even on a NA engine with a hole in the manifold or gasket leak it can cause noticeable loss of power.

[Roy]

Its fairly big. As the turbo has moved from the manifold. Could i lose power from this leak?

1x3cm - rectangular size, possibly bigger

If the exhaust leak is that big it would most definitely be hurting power, also your ears... it would be very loud. what has caused the leak/turbo to move, cracked manifold?

With a leak that big the car should be driving like a pig... is it?

[RNS11Z]

the gaskets busted, it seems as though the turbo has slightly moved. I'll post more once my mechanic takes the turb off. and ye, the leak is pretty loud. i always though it was the turbo cutting the air. stupid me!!!

[Roy]

If its only a gasket then the effect may only be minor, but most likely still be noticeable, when you said 1x3cm rectangle i was expecting a gaping hole.