10-11-2012, 03:52 PM
I thought this would work fine with the GTi head on a XU7 bottom end! This is the best way of doing it IMHO... Though I'm surprised you're using the 1.8 inlet and throttle body still, or is that simply to keep the wanky Sagem management happy?
The best way forwards IMHO would be to use the S16s Motronic MP3.2 ECU, it's not Sequential spark sure (not even sure if it's sequential injection, might be batch), but it's easily remappable, already socketed eprom chips just need swapping for eeproms and Motronic is a well known ECU anyway... It's much better known than the Marelli IAW ECUs at least, there's only a few people in this country who know what they're doing with them... It's the ECU that people are likely to know the best and be able to extract the best performance out of - you'll probably find even that there's a plug and play kit for standalone management if you wanted to, where you could simply plug a standalone ECU into the OEM ECU socket and as long as you've got a base map, you can go from there...
The biggest difference between the J4RS RFS engine in regards to management is the compression ratio - how much that's affected by the cylinder head I don't know, that will affect the spark maps considerably, you'll be needing quite a bit more timing than a J4RS engine would...
Awesome work though, I've been banging on about this conversion for ages - IMHO this is one of the best combinations that could be made...
The best way forwards IMHO would be to use the S16s Motronic MP3.2 ECU, it's not Sequential spark sure (not even sure if it's sequential injection, might be batch), but it's easily remappable, already socketed eprom chips just need swapping for eeproms and Motronic is a well known ECU anyway... It's much better known than the Marelli IAW ECUs at least, there's only a few people in this country who know what they're doing with them... It's the ECU that people are likely to know the best and be able to extract the best performance out of - you'll probably find even that there's a plug and play kit for standalone management if you wanted to, where you could simply plug a standalone ECU into the OEM ECU socket and as long as you've got a base map, you can go from there...
The biggest difference between the J4RS RFS engine in regards to management is the compression ratio - how much that's affected by the cylinder head I don't know, that will affect the spark maps considerably, you'll be needing quite a bit more timing than a J4RS engine would...
Awesome work though, I've been banging on about this conversion for ages - IMHO this is one of the best combinations that could be made...
