hewitt330

Basically do I have any options for engine management that don't involve swapping to a turbo wiring harness. For example the rogue tuning ecu/dcm is apparently tunable but I don't know what modifications would have to be done (map sensor etc) to be able to tune it to handle boost, if it's even capable of that in the first place.

odonnell

Standalone, everything else is a waste of time and effort for a NA to turbo build IMO

944crazy

Have a talk to Peep (Raceboy) about his VEMs plug and play ecu.

V2Rocket

Megasquirt or VEMS will work well for you...
Although it really wouldn't be THAT hard to splice a 951 harness into an NA body.

Dougs951S

+1 if you dont use stand alone, you're wasting your time. The M tune is a nice kit but its still built on the shoulders of ****ty 80's tech. Personally I am biasee and would recommend megasquirt.

SamGrant951

I have a turbo DME/KLR and turbo engine wiring harness here calling your name if you change your mind

hewitt330

Could I just swap the turbo DME and wiring harness, then just get a camshaft offset key to retard the timing 4 degrees throughout the rev range to prevent pre-detonation?

odonnell

Honest question - why are you even considering using a 951 DME. After all is said and done, between a) the upfront costs of all the (used) hardware and b) the tuning time and effort involved, you could have spent the SAME amount of money and the SAME amount of tuning time on other options that are more modern, readily tunable, very well documented, have a huge user support base, and allow simple configuration and adjustment of other changes down the road. There is no reason to be considering a 951 ECU for a turbo NA motor.

Van

A cam-offset key only changes the valve timing, not the ignition timing. The issue with the higher compression isn't *when* the spark plug fires, it's about "pre-detonation" - which is combustion on the piston's upstroke *before* the spark plug fires.

But, to answer your question, I suppose you could swap a turbo exhaust manifold, intake manifold, crossover pipe, turbo charger, waste gate, engine mount with oil return, balance shaft cover with oil feed, oil pan with return, coolant plumbing, retrofit the block for a knock sensor, use the turbo AFM and TPS (and air box and plumbing). Then you could use the turbo wiring harness and the DME/KLR. With a thicker MLS head gasket you should be fine with the compression ratio.

Or, I suppose, just putting in a turbo engine is an alternative.

hewitt330

I'm going to run my own oil lines. And aren't the turbo and n/a exhaust manifolds the same? Besides the heat shielding of course.

hewitt330

Haha and sorry about the whole camshaft offset key thing. I come from the world of Rx-7s and rotaries. With rotaries the only timing I have to worry about is the ignition timing.

hewitt330

I'm very interested in the rogue tuning ecu but I can't seem to get a hold of Rogue_ant.

odonnell

Also look at Ftech9, he's releasing aftermarket DMEs for something like $350.

But again, and sorry for beating up on this...for $350 you can get a Microsquirt ECU with a flying lead harness. And besides buying a few small things like a MAP sensor, trigger wheel, bigger injectors, etc, it's all just tuning. With a DME solution you need to come up with a bunch of 80s 951 hardware which is going to be hundreds more. And you still have to get it tuned. Just doesn't make sense unless you're petrified of a little tinkering.

hewitt330

I'm not scared of a little tinkering. I installed and tuned a power fc ecu on my RX-7 which required new sensors, and splicing into systems like the knock unit. It mostly plugged right into the stock wiring harness though. I'm scared of a lot of tinkering. I figured that with the microsquirt ecu (like the megasquirt ecu) it would be all custom, requiring a custom wiring harness and a lot of soldering. Am I wrong?

odonnell

You can adapt any aftermarket ECU to plug into the factory harness with basic electrical knowledge, like a few people have done. The mechanical swap to 951 parts is way more work than setting up the electronics. I just chose to make a new harness because my stock one was ratty and flaky. I'd go so far as to say that stitching/hacking together a bunch of used 80s 951 parts is more expensive and more of a headache when applying them to a NA. Plus, you can always get VEMS which is largely plug and play.