Personally, if the gains are close to nill and the ecu is running on full out enrichment from the 5V's according to Vf, then I wouldn't bother with it until you had 550's so that headroom is indeed there 
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.Lexus AFM
- Thread starter Obsessionw/Boost
- Start date
But there is some good info man ....
http://www.jblmk3.com/dyno_04.php
http://www.jblmk3.com/dyno_02.php
Or he just lucky?
http://www.jblmk3.com/dyno_04.php
http://www.jblmk3.com/dyno_02.php
Or he just lucky?
He's pretty much maxing out the injector duty cycles on the 440's with that amount of power. Check out his A/F's, I'll pass on those, too lean for my tastes, I'll take 11.3-11.7's over his 12.?'s anyday.
Lucky.
A good rule of thumb would be 1cc of fuel per 1HP at about 80% duty cycle max on the HP you want to make on those injectors for that "headroom".
He has no headroom with that setup.
Lucky.
A good rule of thumb would be 1cc of fuel per 1HP at about 80% duty cycle max on the HP you want to make on those injectors for that "headroom".
He has no headroom with that setup.
And i agree with you .... hence post #37starscream5000 said:
But I am sure he can turn the boost down and be in the 11's and still make 400rwhp or close to it.
True. I find his statement with try to tune with 550's hard to believe. He *should* be able to decrease the fuel pressure, make sure that Vf is satisfied, and tune from there to make better numbers, but the upgraded CT is pretty much the bottleneck at that point in the equation...