Is this possible?
 

Can a GReddy TD06SH-25G with 4x850cc injectors with stock fuel rails, at 15psi put down ~520bhp? (around 440whp)
is it possible?

Off the top of my head...I'd say no.

http://www.maxcooper.com/rx7/how-to/...tem/calcs.html

here is a good site to get estimates...

no

I'd say nope.

The turbo should be able to do it.
What about fuel rail pressures?
If it's bumped up a bit, then it is possible.


-Ted

Fuel rail is stock and I don't remember the fuel pressure (besides that there is an FPR in the circuit).

But with 4x850cc injectors? Even at 100%?
At 15psi?

just upgrade the secondaries and be safe...go with 1680's

The fuel isn't the problem its the turbo. Its not going to make near that power at 15psi.

yea i'm gonna have to agree with them and say no

Same here. No

well take a look at the dyno. Torgue is ~59kgr! and bhp is ~500@6300. The dynoshop had to stop the test because it was already too late... :D And the exhaust could wake up a whole neighborhood.

anyway, to these numbers look possible?

I guess we stand corrected. Nice. I wouldn't have thought that turbo would do it. Is this dyno sheet of your car?

Nope, not mine. A friend's. Just wondering... cause I think the 4x850cc might be not enough. :)

makes sense now, thats on a dynapack

What do you mean? Is it unreliable?

not unreliable, they just read higher than roller style dynos. in comparison, a mustang dyno will read the lowest. still solid numbers tho, #'s are overrated anyways as long as it drives good and the curve is smooth is what matters ;)

Where did you hear that? I was told my a dynapack owner/operator that they tend to read a bit lower than dynojets, he claimed that numerous times customer cars would put down a higher rwhp figure on a dynojet after they left his dynapack. Not sure about the validity of that, but he seemed pretty matter-of-fact about it.

Which is the most reliable dyno?

not to be argumentative, but dose it matter? Are you going to notice a 1% to 2% difference between them? Like adictd2b00st said, numbers are overrated.

well, he could very well be right, based on what he's using for correction factors. thats why its kinda hard to argue dyno numbers, theres too many variables :) i'm just saying, TYPICALLY from what i've witnessed a dynapack will read higher.

case in point about correction factors (and i know this is VERY extreme) when i had my car on the dyno last (this particular one was a dyno dynamics) we were getting REALLY good numbers in relation to boost levels..... and then the owner of the shop remembered that he had set the correction high for a customer car who dyno'd ~750whp and wanted a dyno chart to "get his friends" that read 1000whp, and forgot to turn it back down after the fact, and my car happened to be the next one to use the dyno.

what kind of port work?