first of all this is my setup:
-00 b16a2
-75 shot wet NOS nitrous
-walbro 255 lph in tank pump
-about 4-6 degrees of retard
-ngk 8 series plugs (2 steps colder)

for those of you that have tuned a nitrous car on the dyno, what would be your best advice as to what to set the fuel pressure at using my fpr to avoid going lean? i've started losing compression in some of the cylinders from running the 75 shot at the track on the stock fuel pump and only about 2 degrees of retard...that was a bad idea. i also got some major detonation, but i fixed that by retarding the timing even more and getting colder plugs than bkr7e's. right now im just worried about going lean

do you guys estimate that 50 psi @ idle would be adequate fuel for a 75 shot? maybe 55 psi @idle? thanks in advance

-marc

 

i would love to know this too.

 

bump...anyone have experience tuning nitrous honda motors?

-marc

 

i'd like to know.

 

i have built and tuned nitrous cars and yes you should be around 50lbs of base pressure.

 

you seem to have your car configured properly. 4-6 degrees is more than enough timing. Like miller said 50psi base pressure sounds good. If you go to the track alot with a 75shot your gonna wear your engine pretty good especially after 15 bottles or so. If your not running 93 octane or better chances are you will detonate as well. My friend has almost the same setup as you. Last weekend he detonated pretty bad when he would launch hard in 1st and hit his revlimiter over and over again. Best advice raise that FP and take it to a dyno and check that a/f ratio out. Then get back to us and post a graph of what power it makes

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turbonitrousgsr &raquo;</TD></TR><TR><TD CLASS="quote">you seem to have your car configured properly. 4-6 degrees is more than enough timing. Like miller said 50psi base pressure sounds good. If you go to the track alot with a 75shot your gonna wear your engine pretty good especially after 15 bottles or so. If your not running 93 octane or better chances are you will detonate as well. My friend has almost the same setup as you. Last weekend he detonated pretty bad when he would launch hard in 1st and hit his revlimiter over and over again. Best advice raise that FP and take it to a dyno and check that a/f ratio out. Then get back to us and post a graph of what power it makes </TD></TR></TABLE>

yea...detonation is not fun...i don't find much comfort in knowing that there a bits and pieces of electrode insulator in my 3 of my cylinders. anyways, thanks for the replies guys and i'll be sure to post the dyno plots when i get it.

-marc