so, can i buy a chip destined for a 2.5 and run it>? or it plays to greatly with the mix?
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1.3 Motronic Up-Grade & 2.7i How To
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Originally posted by e30pwr View Postalright are you talking about using the 2.7 bottom end with the 2.5 head? and if so yes you must use a chip that is designed for the 173 ecu and 1.1/1.3 motronic harness and wiring you have installed.
This.
It's really about how far you take your 2.7i. If done correctly and you use the 885 head with intake, TPS, TB, wire harness etc, etc... on the ETA 2.7L block and internals, you would inevitably have to replace the ECU with one from an "i". So the chip you would use would be a 2.5 "i" (or 173 ECU) Chip.
Then boost it.Need a part? PM me.
Get your Bass on. Luke's r3v Boxes are here: http://www.r3vlimited.com/board/showthread.php?t=198123
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^It turns it in to a whole new monster ;)
1986 325es (69k) Garage Queen Buy It Now 10k;1986 325es (track rat) 2.7i How-To & 1.1/1.3Motronic UpGrade
1991 318is (daily driver) 1991 318is M42 Maintenance How-To;1989 325i (parts car)
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Originally posted by Sharino View PostDoes anybody have the details of converting a 87 325e round plug into a 88 325i wiring harness? This is the only part holding up my 2.7i upgradeOriginally posted by kenika65 View PostIt should plug right in and work, but you are going to want to run the 88 harness for best resultssigpic
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e harness is trash period. :)
The e harness runs flywheel sensors and the i harness runs front crank sensor, no way to rig it....
1986 325es (69k) Garage Queen Buy It Now 10k;1986 325es (track rat) 2.7i How-To & 1.1/1.3Motronic UpGrade
1991 318is (daily driver) 1991 318is M42 Maintenance How-To;1989 325i (parts car)
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Originally posted by kenika65 View Poste harness is trash period. :)
The e harness runs flywheel sensors and the i harness runs front crank sensor, no way to rig it....
So I'll need the CPS and timing wheel for the front. Other than that, are there any other sensors that need to be swapped out?sigpic
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That question has been documented all over the Internet and forums, you just need to search. Yes you can put an I head on an e block, yes it will run okay, yes you will have stupid low compression which is okay I guess if you plan to turbo, and yes you will have an unmatched piston/combustion chamber design.Old and improved:
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