not so civic

i just recently put together a ls/vtec. at the moment it is only boosted about 6 psi. it was at 10, then 8, and now 6. the timing is at 14 degrees. the compression is about 9.5:1. i am using a stock jdm p30 ecu. someone told me that it's probably the ecu and the timing advance is high? and it won't run right on the gas here? i have the knock sensor plugged up, but i haven't mounted it in the block yet. is that going to help out any? the purpose of that is to account for grades of gas right...should i have gotten a usdm p30? this was the ecu that was recommended but i didn't think it was that different and i got the jdm because it was actually 'cheaper?!' and smaller. i am in dire need of help...what should i do. i didn't have detonation problems at all before and i was boosting 10 psi with ls head/computer.

EE_Chris

I had always had that thought in the back of my mind....about the grades of gas. Over here, it seems the Si and GS-R are tuned to use 91 octane or Premium. Over seas, isn't the highest grade gas like 100 or something? I had also seen on Apex-i's site, that the Power FC was finally 'fixed' for US grades of gas [Link here].

So yeah, the JDM ECU's might have increased timing.

**This was speculation on my part, except for the Apex-I link**


[Modified by EE_Chris, 6:26 PM 7/24/2002]

DSF

Here is more proof of JDM ecu's being tuned for higher octane.

http://pgmfi.crx-forum.org/phorum/re...?f=5&i=62&t=62

Search the site for mor info, but in this short thread they are comparing PM6 (CRX Si) ignition and fuel maps to that of a PM7 (ZC).

not so civic

sweet! i'll just run race gas all the time . so what the hell should i do? i'm getting fed up with this already...get the usdm p30?