[ajsalida]

Hey Grinch, good to hear from you again. Been doing other stuff not tracking this thread. Mainly tuning, switched over from Cobb to JB4, recently stacked it with BMS backend flash this weekend. Map 5 for a while will turn meth on once it is clear it all works (map 3). So far so good.

Possible major news for XI owners, will update with more info after I do my own investigation. M3 springs fit I cars, or so somebody is claiming in the other susp section. If so, since anything fits I fits XI spring-wise, this is a whole other option for us. Was not aware of this so could be pretty interesting. May even work better for XI due to M3 V8 and XI AWD front hardware weight similarity.

For example Eibach has a pro-kit for M3's, no doubt a bit more aggressive than for regular I's. Supposedly the OEM M3 springs are 1" shorter than I springs, but stiffer. So maybe closer to BMWPS, don't know. There are also OEM ZCP (competition package) springs which are stiffer and lower than regular M3 springs. In any case the regular M3 springs will be more aggressive than I ZSP's (sport).

Found a cheap set on eBay just now for $100/shipped and bought them. Will update in a separate thread once I look into it some more.