Thread: The defacto guide to tuning your car for e85.

I have seen it on 4 differnt cars. All 4 ran great and were running stock maf tables with great fuel trims. I don't know why there is this dedicated group of guys on this forum that won't let it drop but it is a issue on almost every converted car reguardless of make or model

Originally Posted by Frosty

I have seen it on 4 differnt cars. All 4 ran great and were running stock maf tables with great fuel trims. I don't know why there is this dedicated group of guys on this forum that won't let it drop but it is a issue on almost every converted car reguardless of make or model

A car can run great and still have cold start issues. For example, there are many high volume fuel pumps on the market that will deliver fuel like crazy while running, but have crummy check valves and thus do not maintain good fuel pressure after priming. Another example, gunked up IAC can work perfectly once warmed up, but work crappy in cold temperatures. There's a bunch of other potential factors other than E85.

Also, consider that E85 dislodges all the crap in your fuel system which may gunk up fuel pumps, fuel filters, etc. which might also contribute to cold start issues.