engine swap M2-S14 Parts Wanted

[touring CR]

I actually could buy a Mega Squirt or similar but im sure it is easier to modify the bell housing and i trust more original setting than the best setting that can be programmed locally

[jimk]

I actually could buy a Mega Squirt or similar but im sure it is easier to modify the bell housing and i trust more original setting than the best setting that can be programmed locally

No, the stock stuff is crude by today's standards.  It only runs at one A/F setting until the WOT switch is activated then it goes uncontrollable rich on a set table with no indicatiion as to what the A/F is.

[touring CR]

Is there a chip for the original ecu that will allow a huge improvement?

[touring CR]

Is there a chip for the original ecu that will allow a huge improvement?

[M3M3]

then it goes uncontrollable rich on a set table with no indicatiion as to what the A/F is.

that is a gross overstatement.... it does not go uncontrollable rich. when the TPS hit WOT, it goes off closed loop narrow band and goes to open loop based upon one of the static maps in the chip. those maps control timing and fueling. aftermarket chips are available to provide maps with more advance and different fueling tables.

if the motronic ecu operated as you described all the S14's (and M20's, M50's, etc) would have blown up shortly after leaving the showroom floor. i know the stock Motronic ecu in my M50 race motor ran perfect afr's at WOT.

yes, there are newer more complex ecu's available today that allow many more aspects of the performance to be managed to a finer degree, but there is nothing wrong with the ECU that came with the engines.

Edited January 22, 2014 by mlytle

[touring CR]

Great info! So what chips do you recommend to update thw maps and upgrade performance