M20B27 with 173 ecu

[Georgiyk]

So everyone said it’s not possible to run a m20B27 eta with a 1.3 173 ecu but I put a eta in my 1989 325i running the original wiring harness with a 173 ecu just proved everyone’s theories wrong car runs great

[2mAn]

So everyone said its not possible to run a m20B27 eta with a 1.3 173 ecu but I put a eta in my 1989 325i running the original wiring harness with a 173 ecu just proved everyones theories wrong car runs great

Thats great news, congrats. Have you done any 1/4 runs? Im willing to bet it does the 1/4 mile run faster than the 325i did. Gotta redline it to get the most out of it though, thats the key R3V it and R3V it HARD. Have to run it at least 2, maybe 3x to make sure you're getting the launch down. The torque of the 2.7 will roast the tires until you get the launch just right. If you're under 2.0sec 60ft thats a solid launch.

Please report back.

Also, pics?

[e30davie]

Weird first post. Who is everyone? and define running great? checked the AFR? is the ignition optimised for the engine?

[E30SPDFRK]

Countdown to bent valves starting now

[Georgiyk]

The car has zero check engine likes i re did the timing while I put the new timing belt and tensioner in its a eta motor and injectors with b25 intake manifold and sensors that I swapped since the plugs didn’t go together the car rips. Yes I know all of you guys are gonna say etas are slow but I did this as a project because everyone on forums said it’s nearly impossible and I wanted to try it out and see from my self I put 200 miles on the car so far and nothing has happened

[2mAn]

Countdown to bent valves starting now

shhhhhh

The car has zero check engine likes i re did the timing while I put the new timing belt and tensioner in its a eta motor and injectors with b25 intake manifold and sensors that I swapped since the plugs didn't go together the car rips. Yes I know all of you guys are gonna say etas are slow but I did this as a project because everyone on forums said it's nearly impossible and I wanted to try it out and see from my self I put 200 miles on the car so far and nothing has happened

You need to take it out to the drag strip. holds the R3Vs at ~4500rpms, then drop it and redline again. should make it through the traps at the top of 3rd. Still have the 3.73?

[Georgiyk]

Lol do you think I’m a moron.

[packratbimmer]

Now get a chip from SSSquid and you are all set

[ForcedFirebird]

It won't "rip" for long. Even when putting a chip in an eta with only a 5500 rev limiter, the valves lightly kiss the pistons with sustained high revs. The 200 head only came with the outer valve springs, not the inner.

I have done the same as you in the past, but also used dual 325i valve springs - but - the 200 head falls on it's face at about 5000rpm, so after that it's just making noise.

[roguetoaster]

Lol do you think I’m a moron.

Yes, but we hope that you'll learn the error of your ways soon and be better for it.

[2mAn]

Lol do you think I’m a moron.

Only if you cant beat the stock 15.5 time... make it happen!

[Georgiyk]

It won't "rip" for long. Even when putting a chip in an eta with only a 5500 rev limiter, the valves lightly kiss the pistons with sustained high revs. The 200 head only came with the outer valve springs, not the inner.

I have done the same as you in the past, but also used dual 325i valve springs - but - the 200 head falls on it's face at about 5000rpm, so after that it's just making noise.

I know the motor will fall on it Face If I get on it and my car was already chipped when I bought it but I did this as a project just to see if the car would even start and I’m probably gonna wanna see how fast the motor will give up. My next build is the 1988 super eta with the 885 head I have the head in my garage just kinda hard to find the block

[ForcedFirebird]

I know the motor will fall on it Face If I get on it and my car was already chipped when I bought it but I did this as a project just to see if the car would even start and I’m probably gonna wanna see how fast the motor will give up. My next build is the 1988 super eta with the 885 head I hand the head in my garage just kinda hard to find the block

I just realized you have two threads, and in tho other one you said you swapped the head. That's not quite the same as using m1.3 on a 2.7. The 2.7i you made has been done so many times. I even have dyno results in my m20 dyno thread.

[Georgiyk]

I just realized you have two threads, and in tho other one you said you swapped the head. That's not quite the same as using m1.3 on a 2.7. The 2.7i you made has been done so many times. I even have dyno results in my m20 dyno thread.

the motor I put in is all stock with a 200 head. I was saying my next build I want to do the super eta with a 885 head I have a head laying around my garage

[agent]

I just realized you have two threads

At least one of them was posted in the correct subforum. Now they both are.