1.8L vtec motor - 438whp 93 octane

blundar · Post by **blundar** » Sat Apr 14, 2007 8:14 pm

I just got done with this car today. Overall, I'm very impressed. Run 18 = ~18-19psi, 438hp / 284 tq Run 8 = ~12psi, 347hp / 234 tq Run 4 = ~10.5 psi, 334hp / 223 tq Car was a ~9:1 1.8L vtec motor (Sleeved ITR bottom / B16 head, GSR cams) and a GT35e non-ball bearing turbo run on 93 octane with 1000cc Precision injectors. We had significant issues with misfiring/blowing out spark at higher RPMs. Being able to mess with dwell settings for the coil in eCtune really helped a lot towards getting the misfires taken care of. Literally, all I changed in the last run was the dwell table in order to clean up the dyno to the point where it could go home. I guess we'll see if there is a detrimental effect on coil life... It sure as hell helped spark strength. R5671-8 @ 0.020-0.021\" Individual cylinder trim for both fuel and spark was really helpful too - saw marked changes. Hard to tell if it was a result of the 10% fuel in #3 or the -1 degree spark, but it ran super clean. Pretty neat. Ignition adjustments being off were very handy too. I'm not sweating this one having issues. Yay! The motor could definately have made more power with more boost and more revs, but it was already having issues blowing out the spark BAD and the owner didn't want to push it any harder on pump gas.

Post by **calvin** » Sun Apr 15, 2007 5:42 am

:thumbs up:

xenocron · Post by **xenocron** » Sun Apr 15, 2007 6:38 am

Nice, so you took out or added dwell to help the spark blowing out? Nice numbers...since when did you start using a Dynojet?

Post by **Gaskleppie** » Sun Apr 15, 2007 7:15 am

Whow! nice numbers! You did change the dwell time? In what way? Make it more or less? Very interesting that it can help to avoid spark problems! Can you share us the calibration file?

Post by **Synoptic** » Sun Apr 15, 2007 1:01 pm

what was the AF reading when you were having missfire?

Mind-Eracer · Post by **Mind-Eracer** » Mon Apr 16, 2007 5:11 pm

Nice Job, I guessing he extended the dwell time.. Dave, So do you think the stock Coil will have a shorter lifespan, with the extended dwell time?

TurboGoKart · Post by **TurboGoKart** » Mon Apr 16, 2007 9:09 pm

Was this Chris' car? I heard he did pretty well too.

G2TURBO · Post by **G2TURBO** » Tue Apr 17, 2007 8:50 am

Yeah Scott its my car. It runs great! Setup: Sleeved C5 block 81mm 9.0:1 CP Manley Rods B16 head Supertech springs and retainers blah blah ect.... Precision GT35E 1000cc inj. The car:

The goodies:

The Dyno:

Im looking forward to getting the logger version of the software so I can datalog at the track ect... and we will be setting up the boost control as well. The car wont hook at all on the street at the current boost level 18psi until 4th gear.

Post by **calvin** » Tue Apr 17, 2007 2:51 pm

i'm working on that...

TurboGoKart · Post by **TurboGoKart** » Tue Apr 17, 2007 5:13 pm

Heh heh.

Chris, Craig told me you did pretty good! Off to read more about this program...