What's up,
I have a b18c1 endyne 13:1 pistons/ rods and Toda Spec C cams w/ valvetrain,Skunk2 mani,Spoon header, everything balanced ..I'm using 370cc RC injs. with a P30 mugen.I have the paxton regulater set at 40psi and I have a 255 walbro pump.. I'm getting a sort of studder at top end mainly 3rd/4th..I leaned out the apex tech controller but I'm still getting that studder.. I checked the plugs and they show a good burn...I don't get it.. I'm using 94octane fuel mixed w/ C16....

 

Any idea what your mix is at?
I ran 45 PSI with a similar setup and 370s. Cs, 12.5 rollerwaves, B18C1 with ITR head and IM, Spoon header.
Did you try adding any fuel to see what would happen? I am running a Hondata, and towards the top of the RPM range I have to fatten it up...


Jason

 

Well Jason,
I'd be lying to you if I really new the mix. we haven't been able to go to the dyno yet..... I'll take your adice and try to fatten it up on the top end and see what happens... I'll let you know later, thank you for your advice...Dennis

 

Well,
I leaned it out and the car has changed for the better, alot better!!!! We did extensive street tuning with the Apex Vtec controller and a volt meter, and man what a difference.... we leaned it out through the rev band and monitered the volt meter and the the halmeter AF30 and the autometer EGT gauge and we found the sweet spot.... And I mean the SWEET SPOT!!! From a rolling start the car spun 1st,2nd 3rd, and a nice piece of 4th!!!! We did this repeatedly to confirm everything..... The plugs were burning perfect , with a tiny bit a richness at the top to be safe but the car loved it, and great throttle response.. I'm going to the dyno in a week so I'll have some numbers soon , as well as going to dial in the spec C's .....Thanks for the suggestion....Dennis