ECU Question

#1

this may be in the wrong subforum but since it affects the performance of the car i thought i’d post it here…

I was just going over the rules and it says that ECU’s may not be modified, however it states that it may be replaced with a non-speed limited ECU…

which cars brought a non-speed limited ECU??? European cars? any help here would be greatly appreciated…

my car currently conforms to SCCA IT-S rules so I’m trying to find out what needs to be retrofited/upgraded/downgraded to conform to Spec E30

TIA,

Mike

#2

You want the computer that part number ends in 173. Plug and play with any of our engines (M20B25).

#3

that’s exactly the one i have on my car, i didn’t know it had no speed governor hmmmmm

Mike

#4

To be clear, more than just the 173 computers are speed limiterless. I believe the 153 doesn’t have one, maybe more. The 524/5? has the limiter around 122-124 mph.

#5

i guess i’m set… my car is an '89 but i also had a '90 parts car equipped with a 173 which i sourced and chipped when installing in my IT-S car.

thanks for the info… it seemed really confusing at first glance.

Mike