Since 1983

iTrader: (3)

Ok, so I have finished my build/re-freshening.

b18c1
12:1 pistons and forged rods
ITR cams with crower springs/retainers
header and catback

I put everything back together, the car runs and drives ok, but i lost a lot of the power and pep the car had last year, it's tuned on a apexi vafc unit. When the motor was disassembled it burned a lot of oil so that was the reasoning behind refreshing it, but it pulled significantly harder. Also at cruising speeds, say 3500rpm, its jittery. Now all of a sudden tonight it has the loopy idle. I haven't changed anything on the setup with the exception of replacing ITR springs and retainers with crower. Any suggestions?

RareSpirits

Re-tune, and ditch the vafc. With that setup a VAFC is doing nothing for you. It cannot extract the engines true potential, although it's not-off-the wall crazy compression is a tad up there.

Since 1983

iTrader: (3)

the ONLY reason the vafc is being used is because it was what the motor was tuned on when i got it last year, it was tuned on it in 2004. I guess i am just failing to understand why the motor ran exceptionally well last year minus burning some oil, and now that everything is fresh it runs like absolute garbage

Since 1983

iTrader: (3)

motor now idles like absolute garbage...anyone???

PyroProblem

compression test

DDTECH

needs a tune..

and with the change of you using horseshit for tuning, you probably didn't seat the rings ..

Since 1983

iTrader: (3)

compression is 285 across the board, and I didn't switch the tuning, I used everything exactly how it was. leakdown test also yielded no negative results.

g2daturbo

check your injector wires had a prob on a h22 like that ran shitty at idle and sounded loapy as u describe had a bad engine harness injectors werent getting power or fulll power

nus_dogg

Cool info.