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750cc/S-AFC2-Timing??

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AJs'97GS-T

15+ Year Contributor
53
0
Nov 5, 2003
Rochester, New York
Hi before u guys tell me to research i have i can't find anyone with big enough injectors. So my question is this my DSMLink failed because i was unaware at the time about the EPROM Ecu thing, so now i have to settle for S-AFC2 as my tuning devide. I have a fully built 6-bolt block and head (street ported), all supporting mods, 2g MAS-- What should my Timing be in terms of a safe number. I am trying to make 360whp on the S-AFC until i can get my Haltec Stand-Alone next month or so. But in the meantime i am getting my car dyno tuned on the S-AFC. I Have talked with many shops and they all say i can get about 340-360 whp but can not tell me what a safe timing number would be with that big of injectors. What timing range should i be closely monitoring during the dyno session. I really don't care about how much power i'm making as long as my car is safely running that amount of power but i do expect atleast 325whp i didn't spend all the money i did not to hit 300whp even if its only a S-AFC for the time being. Fellow tuners with big injectors close to my size and running on S-AFC your input is appreciated.
 
Typically you will want as much timing as the ECU will give without giving knock...


What do you mean you can't find big enough injectors...you can get 1600cc injectors for the DSM if you try hard enough.

How are you planning to tune the timing?
 
750's are alittle big for a SAFC, considering you can only lean out +-50% and 750's are bigger than 50% more than 450's, to get it to run decent you could drop the base fuel pressure down into the 30's or just invest in this for a cheap way to run that big of injectors with a SAFC:

http://www.dsmchips.com/2g.html
 
Hey thanks alot guys. I think i will just have to wait another month or so to get the money for the DSMLink and EPROM and get it Dyno tuned instead of wasting my money getting the car tuned now on the S-AFC which just isn't worth it to me it seems oh well no car for me Now on a total of 9months gonna be 10 or so now :cry:
 
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