upgrading from 40's to 60's

[stevek]

i'm thinking of upgrading injectors from 40's to 60's, trying to get little more hp ,just dynoed at 370 hp and 365 tork with these upgrades, 60 series turbo at 24 # boost,front mount intercooler,kenne bell headers,ATR 3 in downpipe, 100 # valve springs,kenne bell 230 lb fuel pump and high flow inline fuel pump also from kenne bell i installed about 10 yrs ago,kenne bell 70 mm throttle body and manifold, 3 inch MAF translator with extender chip, 3200 stall converter,scanmater runs usually around 800s ,air fuel ratio guage runs between 13 to 14, car runs good 80,000 miles on it, just wondering any advice on next upgrade without changing heads, or tuning ideas, i dont think i can adjust timing without upgrading to costly computer software like F.A.S.T, also if i do go to 60's will i have to get the extender chip redone, any help i would appriciate it. thanks

 

[Red C5]

Upgrading to bigger injectors won't do anything for you unless you've maxed out your current injectors. Also, imo I think your tuning is a little too aggresive unless you mean it idles at 14:1 af? What's the a/f at wot?

 

[stevek]

WOT is usually between .750to .820 and 14.8 on a/f meter just drove car

 

[stevek]

drove car again and watched gauges better this time they read at wot ,24# boost,A/F @13.3,scanmaster @ .780 to .820 with 2-3 retard, fuel press at idle is 50 #with hose off, now with SMC meth system set to go on at 14 # and max at 25 #of boost there is no retarding on scanmaster and A/F meter is at 11.2 if this helps let me know.

 

[we4Mateo]

drove car again and watched gauges better this time they read at wot ,24# boost,A/F @13.3,scanmaster @ .780 to .820 with 2-3 retard, fuel press at idle is 50 #with hose off, now with SMC meth system set to go on at 14 # and max at 25 #of boost there is no retarding on scanmaster and A/F meter is at 11.2 if this helps let me know.

Glad you got rid of the spark retard. It's been said over and over again, but here goes again, at your boost level, tune for ZERO knock. Stock stuff lasts a long time with NO KNOCK! I've seen 12 and 13 sec cars spin mains with a bad tune...