Thread: Went to the strip, not so well

Well I just took the B14 (SR20VE) to the strip and raced it for the first time. Just a couple hours before going to the strip I raced a friend in his MKV Jetta GLI (2.0T @ 20psi) his car is APR stage 2, downpipe and intake, I was able to get him by 2 car lengths at the 1/4 mile, we raced in an old track but we had no timeslips or even a tree. I heared some detonation up top and I decided to pull the base timing a couple of degrees (was at 15, probably ended up 13), got rid of the knocks and the car felt fine.

At night I went to the new strip and did terrible, after some runs I ended up with 15.2 @ 94MPH, that's a DE time and trap... the times were a lil bit off because of the track, no traction at all, even when that would explain the times that wouldn't affect the trap speed that much.

Here's my setup

SR20VE
SR16VE flywheel
Gspec Pulleys
Basic daughterboard ECU (SR20VE Calum bin)
eBay 2.5" header
2.5" mandrel bent exhaust
VVL @ 4800RPM
DE MAF
Flow stack

Yesterday I did some datalogs at around 13º base timing and I found a knock just when the high lobes kick in, at the track I was running against my friend in his JDM DE B13 and we were even almost the whole track, in 3rd and 4rd I was just a lil bit faster, his best time was 15.5 when he had been in 14.9 in a good day where the track is well prepared.

My friend told me some flames going out of my muffler between shifts, I have no wideband so I can't tell if I'm lean or rich


Any ideas of why am I running that slow?

You should get your car tuned correctly, then go to a better track get some new numbers. Theres no point in trying better times if the track is really that bad!

^+1. You can destroy your engine driving like that. Get a wide band and get your car properly tuned.

I'm getting a wideband but, I don't think I could be doing it that bad since is a proven bin, I know that every car is different and I'm pretty sure I need to tune my gas map anyway.

The bad time would be explainable but, how would you explain a JDM DE keeping around with me (he's on stock cams too)

Maybe I'm just running lean, I'm about to order a wideband

Does anyone have a VE OBD2 bin? I'd like to compare it with my bin

any weight reduction?

why de maf?

ve or n60 maf, lighter flywheel and tune and you will be in the 14 sec category

peace

i was running 14.7 @ 94 in my b13 with the same setup minus flywheel an pulleys but i tuned my afr.. Thats on a mildly prepped track on bald street tires..

If you are getting a knock after the cam switch the ECU will start to pull timing. Just because a tune is "good" does not mean anything with your motor and setup. Get it tuned and try again.

Got a N60 in the garage, the actual MAF is reaching 4.27v at 7000RPM, even when is not maxed out I better change it soon.

I guess it's all about the tuning, timing map feels ok but I haven't check the AFRs yet, I might be running lean

that calum bin has some pretty aggressive timing.. i havent ran it in a long time but if i remember right it ran a tad rich..

The maf shit is hype. The maf you should use depends on your header, intake and exhaust. SERACER on this forum has a b13 racecr with a VVL. All he has is i/h/e DE maf and makes over 200whp. The giant maf thing is unnecessary. thats not your problem.