Hey guys, always reading you with interest. Always appreciate Torsp comments.
About the FPR and fuel pump.
I've bought a fuel pump from URD
with the 2.85 pulley but didn't install it yet. Ok my set up is a TRD CAI 1st gen with an AFE ProDryS, DTLT headers, TRD catback, TRD SC and reflash, URD 2.85 stealth pulley and URD MAF controller. oh and i've done the OEM FPR mod.
Since these works, i've done a lot of data logging and fine tune on the fuel map of the MAF controller. It doesn't seem to have any problem with the fule pump cause at WOT, in fact i've to reduce a lot the amount of fuel between 3000 to 5500 rpm (fuel map cells from 10 to 9.4) to lean the mixture from 10 to 11-11.5 AFR. But i can see from the data and the fuel map that the AFR is getting just a bit leaner near 5 500 rpm (fuel map cell 9.5) but there is still room before having a problem of lean mixture. Based on that, if i'm adding any mod and still increase power, i will swap the fuel pump for the wallbro HP.
I'Ve not seen any problem with the FPR mod and it has not generated any error code. The only thing is, i feelthe truck hesitating when giving him throttle at low rpm. Let say you're running at 1000-1500 rpm and 15-25% throttle and depress the pedal to 35-40%. I'm investigating on that if you have any comments cause we are still in closed loop in this area and my trims are near 0 all the way.
Oh in fact i'm having error code
. The check engine light and traction control light are lighting up when i spin the Wheels on a start
(the wheels were not really spinning before the SC). It's a low mass air flow sensor input probably caused by the traction control trying to close the throtle to avoid spinning. I remove the code, and everything is ok until i spin the wheels again
. Last dyno was 298.2 RWHP at 5500 rpm and 328.6 lbs-ft at 3700 rpm. Max boost 7.5 psi.
Any body know what would be the gain by installing NST pulley kit with the overdrive crank pulley. Pro and Con.
Sorry fot he english quality
and not trying to steal the thread but infos and question are related to original thread.