5.7mmImportkilla

I was trying different jets.. Working my way up to a 75 shot.. By the end of the track I hear clicks click clicks clicks like if paper clips were falling on my hood..
is that the sound of engine knocking?? Runing Too lean??
Thx..

EDS01SS

iTrader: (30)

Sounds to me like detnation. to much timing would be my first guess. did you retard your timing as you were going to bigger jets?

Graham@NitrousOutlet

Do not spray it again.

What does the tune up look like.

Plugs? Plug Gap? Timing pulled? Jets? System? Fuel pressure? N20 Pressure?

Noyzee

iTrader: (37)

75 shot should be fine with stock or even a little more timming with 93 octain fuel. i run 100 shot in my vett stock tune, and i run 125 in my cousins car with 2* added timming.

could be knock but prob from poor fuel or poor tune, is it stock tune?

5.7mmImportkilla

The car is set on 27* rite now N20 35 and fuel 20, Tr6 (bf6's sitting on my shelves) i pulled 3* via Hsw interface, stock fuel pressure.. 950/1000 N20 pressure using iceman solenoids with HSW electronics, and HSW 78mm plate. ..runs nice at 12.8 13.2Ish on the AEM wideband With no promblems.. Just for kicks and perhaps for a 10th of a sec I added a 38N jet then on the top of the track I heard like someone is dropping a few paperclips on top of my hood a few at a a time..it didt sound rite so I put 35N back on....
the standard 75HP jets sizes does not work for me.. runs too lean causes the N20 to shut off triggered via microedge protection settings..
People around me say that it might be my fuel pump? But then again there's tons of people running 100 shot with stock pump.... Sooooo...idk
My main question is that clat clat crack tic tic sound? is it the sound of knocking/ denotation ??


Thanks fellas!

zacht

iTrader: (18)

your hitting a 12.8 AFR on the nitrous???

check your fuel pressure too...pumps go bad..

5.7mmImportkilla

yeah 12.8.13/.2 ish when im spraying a 50 shot.