Originally Posted by hellomyBMW
What I meant by one map was running one tune at a time. For example, JB4 map (x) OR COBB map (x). But I found out from another user that you CAN run JB4 AND COBB at the sametime for finer tuning like you said.
But if you can answer me this... JB4 on 335i is equal to JB4 on 335is (assuming both running 93 oct with same mods, same map) Which has more output?
Thanks for the heads up. I should be receiving my JB4 G5 by end of this week. I will keep you posted and if I do have questions, you'll be the first one to know. lol Maybe I'll turn to COBB later down the road but I think JB4 will do for now. Next up is DP but I read from another thread that CPO warranty does not like DPs... so I'm debating...
Anyways, thanks for your input! Much appreciated! ^^
Experience with JB4 first since it's cheaper. It's GOOD power for the PRICE. When your ready then get a Cobb for serious tuning
and yes jb4 on 335i and jb4 on 335is most likely put out same numbers even tho 335is has 320 and 335i has 300. it's the same piggyback setup to adjust psi and other things. BUT It varies on Tranny for instant and also cooling to make another difference. in my theory jb4 335i vs jb4 335is with DCT = DCT winner.