Recently Tuned CRX: dyno enclosed

[PSiedTSi]

nice! how far off was the generic tune?

[seanjohn]

It wasn't too terribly close. The A/F started at 17:1 then made there way to between 16-15:1 from 4k upwards. Needless to say it was too lean, and wasn't making much power. Timing was stock on the generic tune, so we were able to pick up about 5 peak hp with added timing up top.

[Bryce]

Nice numbers Sean! Give me a ride some time

[HandoEX]

seanjohn wrote:

One more thing, the motor was built with nitrous intentions, look for 100-125 shot dp dyno comming THIS SPRING!
Nice numbers to go with that helpful tune! So, you're planning on going with a decent size dp shot.....what are the goals you have in mind with that setup after tuning as far as hp, tq and e/t are concerned? Are you keeping the car now?

[seanjohn]

Well, I'm still half-assed looking for a shell...I might just man up and get the rust on mine fixed and shell out 3k. I'm looking for about 300hp with a solid 350-275 tq on a 100shot....shooting for high 11's on slicks. Eventually I will probably get some headwork done to reach 200whp all-motor.

[treimche]

Is the block in there sleeved or just stock sleeves? Also how high do you rev it?

[seanjohn]

Block is stock, bored to 81.5mm. The revlimit is set at 8.5, I probably take it to 8250 or so, as you can see power starts to fall off at 7750. Like the oldone says....r.p.m = ruins peoples motors!

[treimche]

That is sweet being able to rev the LS/VTEC that high without problems. What else did you have to do to let it rev up there?

[seanjohn]

Balanced crank is big, and the arp rod bolts are a big one too. The biggest thing is just making sure that everything is balanced so that the motor doesn't shake itself apart at high rpm's. If you really wanted to go all out you could add a block girlde, but this typically involves using a GSR oil pickup, pan, etc.

[integra_gsr98]

High revving LS's are a myth these days anyways. Good rod bolts and away you go. That is all that really matters with them. That, and not having the LS head on there that is. If anybody has seen the internals of an LS head it is scary to say the least.

Good numbers Sean.