I need some one to take a look at my map and datalog,

setup is
t3/t04e 50 trim w/.48ar
walboro 255 intank
rc sat 550's
Spoolin manifold, 2.5 inch down pipe
3inch exhaust no cat.
Boost is at 10.7 according to crome pro.

12-12.6 afr's

I have fuel pressure gauge in the engine compartment. I need to have someone check it when i go to the dyno next weekend. Maybe the pump is taking a **** a high rpms but wouldn't that make it go super lean?

I last dynoed at the same boost level and made 240 with the full catback attached.
I know 550's should be good for 350-380hp right?

I have the bin and datalog if any tuners can help a fellow tuner out.

 

the Crome duty cycle values are not correct.

does the AFR start to lean out?

 

I've run RC550s to about 425-450 before (52 psi base pressure).

Most programs duty cycle numbers are "reasonably close" at best.

 

Sorry for hijack, but i know on the table they are only approximations, but when you datalog and it records a duty cycle, is that correct??

I have been helping a friend with an ITR, S300, RC 750s, and a GT28 and Im getting datalogs showing 100% duty cycle (and the table approximates that as maxing them out) at 13-14 pounds, which shouldn't be anywhere near maxing out those injectors. I am running it rich (high 11s in this area) but still, not overly rich.

Also, to get the fuel right at idle, i set fuel compensation for 625 cc injectors, so i don't know if that causes it to calculate differenly.

 

ohh, i didn't know that.
It does start to lean out a touch right around redline to 12.6-12.7.