Can't go past 5000 with NOS now:( - Honda Prelude Forum

NirVTEC · 12-03-2003, 08:25 AM

Well, I got my car back yesterday and was spraying for hours with no problems. Last night when I armed the NAWZZZ it wouldn't go past 5000. It flies to redline w/o it though. Its very strange. Any ideas? Leaning out? Solenoid?
I left the vafc at stock settings, running low 40's on the fpr.
I retarded my timing the old fashioned way -3*. Running 1 step colder plugs with an MSD coil.
If it did the same w/o the n2o I would be very scared but its not!?!?!?

axion68 · 12-03-2003, 10:53 AM

can you go past 5k without the juice?

NirVTEC · 12-03-2003, 11:18 AM

Yes!!! And very fast I might add! I slammed through 2nd 3rd and 4th shifting past redline no problem. Arm n2o, won't go past 5000, shut off n2o and it screams again!
Talked to some people that seem to think its a solenoid, but why wouldn't it go past 5000 then?

laughin2.2 · 12-03-2003, 01:17 PM

Does it stutter or does the thing fly up to 4900 rpm and just stop?

NirVTEC · 12-03-2003, 01:28 PM

bounces from 4800ish to 5200ish and won't go further.
It flies with NOS from 3500-5000ish and won't go any further!
Any idea Kris?
I was going to call, but I figured 2 calls in a day was enough yesterday! I know you're not running an N2o HelpLine, but thanks for all your help!
I mean there's not a whole lot that goes into these things, WTF could it be. 5000+ N2O only?!?! Weird!!!
Need more fuel pressure maybe?
Maybe a bad N2o noid causing my car to run crazy rich with fuel only spraying. The n2o noids are used power****s.....Fuel is a brand new cheater.

Vapor · 12-03-2003, 01:47 PM

sounds like you can't VTEC with the nitrous armed. are you running any RPM based equipment? maybe the nitrous is somehow interfering with the VAFC readings and it won't let you switch to the big cam?

NirVTEC · 12-03-2003, 02:07 PM

Stock VAFC settings, no rpm based equipement. It was working fine at one point!
It feels like I hit fuel cutoff at 5200, and it bounces me back to 4800....

eu4ik · 12-03-2003, 02:30 PM

i dont have vtec but i was having some problems a month ago with getting past 5grand. all i had to do was retard the timing a little.

NirVTEC · 12-03-2003, 02:41 PM

Well, I retarded the timing 3* already. Is it possible that my old school trick isn't working?
Paper clip in the blue harness, and slid the distr. back. My tuner even marked the distributor +3/-3.
Maybe the distributor slipped back to 0? Is that even possible?

laughin2.2 · 12-03-2003, 04:20 PM

The distributor won't slip if you bolted all 3 bolts down. Hop on a dyno and check your af.

NirVTEC · 12-03-2003, 04:39 PM

Well, we're going to check the timing, and all the noids. Hopefully the problem will be found there.
Worst case scenario, I hold off until spring to have the real fun on a regular basis!