Hey guys,
hooked up my plx m300 wideband o2 gauge/sensor. Works pretty slick. With a 2.7 pulley on hitting 6-8psi, at WOT is below 14.7 (richer). I think i was seeing anything from 11 to 12. Now, just curious to what others are seeing and with which pulley. Anybody max out their gm s/c injectors yet? And install new (bigger ones).

Nate



Evolution of Cavyboy-->C22t--> C24na--->c24s/c
1995 Cavalier W/2k1 Engine
GM S/C 13.940@99.78pmh w/2.068 60ft

those are good numbers for boost... but then again thats because of the GM reflash...



LE61T PTE6262 Powered

at 6psi boost i am seeing 12.0 at WOT and 14.4 when under no load.

I get high 11s at WOT.......and 14.4-15.2 at cruising speed and idle..



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Bobby(Blown&Pullied) wrote:I get high 11s at WOT.......and 14.4-15.2 at cruising speed and idle..

Thats about what I see. So are numbers that low under boost generally good?

15.5-16 at cruise 14.5 or so at part throttle, 12's& 13's at moderate throttle low boost (to 5 psi or so) and right on down to 11 - 10.5 at wot past 10 psi.



99 Turbo Sunfire GT | Ram 2500 | International Rollback | Mr Hanky the Suburban

i was seeing low 13's at full throttle in all gears , im not sure what size pulley ive got


my s/c is 1 of the proto types GM had , and measured it against a 2.8 pulley , and mine is smaller than the 2.8 , but its not much smaller


i usually see 5-7 psi


ive got 36lb injectors now and i see low 12's , and sometimes 11's , depends if i have my alky on or off and how cold or hot it is out

and forgot to mention


ive droped my fuel pressure from 50 at idle to 30


so ive got alot more room with them 36lb injectors


on the s/c kit injectors , i went up to 65psi , and still couldnt get out of the low 13's for afr