BMW 335i Dynojet Results
Oct 19, 2006, 06:51 PM
#181
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Originally Posted by shiv@vishnu
I think the car has an airpump for catalyst performance. If so, that is what causes the tailpipe wideband to read so lean.
-shiv
-shiv
ps if you dont sware or have gray hairs you can kiss that good bye
these are not normal cars they are really annoying!!!!!!! god bless your soul
Oct 19, 2006, 07:30 PM
#182
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Originally Posted by matyb
the unit that you think is an air pump is a vaccum pump, it is a valvetronic engine that canot create vaccum at idle due to the edk (throttle module) position. have fun w/ this one we can barley figure these things out (not just the 335 all bmw) so good luck if ya got any quirky questions you can drop me a pm
ps if you dont sware or have gray hairs you can kiss that good bye
these are not normal cars they are really annoying!!!!!!! god bless your soul
ps if you dont sware or have gray hairs you can kiss that good bye
these are not normal cars they are really annoying!!!!!!! god bless your soul
-shiv
Oct 22, 2006, 11:06 AM
#183
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Originally Posted by shiv@vishnu
Actually, the 335i engine isn't valvetronic. It has a traditional throttle body and does indeed creat vacuum in the intake manifold. As for AFR, it simply does run that lean. There is no airpump. And the vacuum pump is there to actuate the boost control system. It's a wierd car for sure. But we got we needed out of it. Took some work but we're certainly happy its behind us..lol. Thanks for the feedback though...
-shiv
-shiv
p.s. just think of when it does go valvetronic all that control!!!!!!!!!!!!!!!!!
Last edited by matyb; Oct 24, 2006 at 03:10 PM.
Oct 24, 2006, 07:52 AM
#184
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I think you recently finished up the 335 Xede's, are you now able to tell us with more certency if an EVO xede can be adapted for use on the 335?
Originally Posted by shiv@vishnu
Unfortunately, the mitsu XEDE is different from all the other XEDEs due to its frequency-based MAF sensor. The BMW xede is the same unit we use in Honda, Lotus and Miata applications. You *could* use the Mitusbishi unit and use one of the extra analog in/out pairs for MAF but you'd be short a pair when it comes to controlling the widebands. Its still too early to tell if all the ins/outs in the XEDE will be used. If not, the Evo unit will work in the Bimmer just fine. We'll know soon enuff 
Shiv
Shiv
Nov 23, 2006, 12:49 PM
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4.1 sec 0-60 is what I have heard this tune gets, but what would guys say its 1/4 mile would be if driven to its fullest on 91 octane? I think it could get low 12s, is that too low.
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