I was watching a video of a guy testing his launch on slicks with S3 + HOM + Nitrous, so it can be done.
__________________
"Been in a palace, been in a jail, I just don't want to be reborn a snail
Just want to spend eternity, Right where I am, on the sunnyside of the street"
Thats him...but fuck! Timing advance and nitrous!?!
Yeah, just seems like an oxy-moron to me...
Nitrous will cause your cylinder pressure to peak much sooner, relative to crankshaft position, and therefore, you would want less timing.
I'm not going to go so far as to say it's impossible to hold HOM with N2O, as I've seen it happen.
But whether or not it's actually beneficial would have to be tested on a dyno or by trap speeds.
More timing is, obviously, not always better. If you are achieving peak cylinder pressures before you reach top dead center, or even at TDC, you'll sacrifice HP, even if you don't detonate. Ideally, you want your peak cylinder pressure around 15 degrees ATDC. That will create, in theory, the best results for power production.
should'a went faster then that, but I almost hit the wall on this run, spinning clear through 3rd, into 4th gear. Can't win them all................
I knew you were having success running the N2O with HOM (35 shot if I remember correctly). I'm curious, have you ever tried running the 35 shot off of HOM to see what the trap speed difference was?
I almost wonder if adding a 50, or even a 75 pill off of HOM would be more effective, and still be just as safe w/out all that extra timing. Something that should be tried, IMO. Not bad, though. 121 is moving.
^^^ I have almost the same mods as him and I'm thinking of squeezing a 75 shot OFF HOM. I'm trapping 117 here in Vegas w/HOM on so it would be interesting to see the results. Just afraid of, you know, grenading my motor....LOL
You guys should get some headwork! It does wonders. Get some decent cams, larger valves, and remove the restriction from the exhaust ports. It would do allot of good, and doesn't mess much with driveability. If you've never checked it out, you can barely fit your pinky inside the exhaust ports on a stock head!
I know it did me allot of good back when I was running S3 (best of 11.63 E.T. and a best trap speed of 119 MPH on PCM controlled boost w/agp wga @ 23 psi - SLC, Utah 4500 ft elevation).
My buddy Chad (aka Thesleeper) ran a best of 11.45 @ 122 MPH (Boise, Idaho 2700 ft elevation) with the same headwork I had, plus Crower S2 cams and the DCR port and ramp work. He was running about 26 psi (non-pcm controlled) from his setup to get that run.
And the nice thing about headwork is it works well with whatever setup you ever decide on...even nitrous.
I knew you were having success running the N2O with HOM (35 shot if I remember correctly). I'm curious, have you ever tried running the 35 shot off of HOM to see what the trap speed difference was?
I almost wonder if adding a 50, or even a 75 pill off of HOM would be more effective, and still be just as safe w/out all that extra timing. Something that should be tried, IMO. Not bad, though. 121 is moving.
These numbers, do they reflect changes observed only with HOM engaged? Or is this without HOM, or is it Non-HOM vs HOM? Have you done any back to back testing to see what the differences are, HOM vs non-HOM with spray?
I'm only curious because as previously stated, with the earlier peak in cylinder pressures, I almost wonder if it would ever peak too early and work against making power!
this is my kit, and how I setup my system. I kept it simple, because that's really how a nitrous kit should be. The only true varibles you need to keep set is
1 Bottle pressure that has to be a constant
2 fuel jetting based off the 1st varible.
after that it's mash the pedal down and hold on.
notice, I run NO fuel pressure safety switch, Window switch, strictly a WOT micro switch mounted off the Throttle body. 75 shot and less is safe, trust me............but thats not to say if your stupid or push limits it will bite you. I'm sure you guys have seen my 100shot DRY rental videos? Everyone I know was scared of nitrous til that night and event. After that, they'll tell you........car loves it!!!!!
These numbers, do they reflect changes observed only with HOM engaged? Or is this without HOM, or is it Non-HOM vs HOM? Have you done any back to back testing to see what the differences are, HOM vs non-HOM with spray?
I'm only curious because as previously stated, with the earlier peak in cylinder pressures, I almost wonder if it would ever peak too early and work against making power!
those number should reflect what the car should perform based off my experience. I really wish that I could tell you the whole HOM vs No HOM story. But 6days after I mount those brand new slicks, they had belts showing. That and the fact my 3rd gear syncro took a shit, right after the shift selector broke. I've only made 3 passes at the track with nitrous, and none with the Big Shot's. I'm a street racer for life. I found that with my car, a small shot, and HOM is the best balance of useable power, and traction. Do you know how long a 35shot on a 10lb lasts? It makes my system have 0 lag, and it seams to run at 100% efficiency on the spray.
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.
stage 3 / nitrous?
![[vu]juan's Avatar](http://www.srtforums.com/forums/../forums/customavatars/avatar33153_1.gif){kind=avatar}
I've only made 3 passes at the track with nitrous, and none with the Big Shot's. I'm a street racer for life. 
Linear Mode
