Swapped S52 Dyno

[Kilijan]

So I got the chance to run my ti on the dyno this last weekend. The only "mods" done to it (other than the S52 itself) are hi-flow cats, custom cat-back, and running a 328i DME instead of the proper M3 DME. I'll be making more dyno runs as well as getting an AFR graph after I make some changes to the engine (M50 manifold, throttle body, 24lb injectors, HFM, software) sometime in the near future. I think my HP numbers are a little low, possibly due to the wrong DME being used.

[Marv17]

and why are you running the wrong DME anyway? is there a purpose?

[Kilijan]

I have an M3/4/A DME with a Dinan tune on it from the donor car. It throws a CEL because it can't see the transmission. I also had a manual M3 DME but we couldn't get the EWS to align with it. The whole reason behind it was to pass SMOG after I went to the state ref because the CEL couldn't be on. The 328i DME is the same computer as an M3 but with a more conservative tune (less spark advance, lower rev limiter, etc). I'm either going to see if I can get it reflashed with an M3 tune, or eventually hunt down a match set of DME, EWS, key for a manual M3 and run that.

Edit: I also wanted to make a run with the Dinan DME, but I grabbed the wrong EWS box and couldn't get the car to start.

[Marv17]

ah. i see i see. makes sense.
yeah, i would try to get that M3 dinan DME to work. Where is Fairfield anyway? There is a shop around LA if that isnt too far to drive to that can probably help you out.

edit: i wonder what im getting in HP with my dinan M3 DME with M50 manifold??

[Kilijan]

Fairfield is about 1 hour from either SF or Sacramento depending on which direction you drive. I have the M3 DME working, it is just annoying having to reset the CEL every time I drive somewhere.

[tiFreak]

I'm sure the correct DME would make more power but at least you're making more power than with the M44

[wolferj-RIP]

Chris;

That does seem like a very conservative/low dyno... I agree, it's probably the 328 DME... (I have 3 other DME's, but they are all obd1... no help there.)

Where are you doing the dyno runs?

[Kilijan]

I went to the GGC BMWCCA suspension tech session at Performance Art in Gilroy. I also got to drive a 2010 MX5. Stomp on the gas and you're going 100 faster than you can shake a stick at. The brakes are the size of dinner plates too. Dyno Dynamics are supposed to read a lot lower than other dynos as well.

[cooljess76]

I wouldn't even bother putting my car on a dyno with that kind of tuning. But thanks for doing it though, atleast now we know what an s52 does with a 328 DME, lol.

[Kilijan]

Originally Posted by cooljess76

I wouldn't even bother putting my car on a dyno with that kind of tuning. But thanks for doing it though, atleast now we know what an s52 does with a 328 DME, lol.

The origional plan was to run it with the 328i DME then swap to the Dinan M3 DME that I have. I grabbed the wrong EWS box and couldn't start the car, so both runs were made with the 328i setup.

[cooljess76]

Originally Posted by Kilijan

The origional plan was to run it with the 328i DME then swap to the Dinan M3 DME that I have. I grabbed the wrong EWS box and couldn't start the car, so both runs were made with the 328i setup.

Oh I see, so you were already there and did a pull with the 328 DME before you realized that you grabbed the wrong EWS module. Still a cool idea, can't wait to see your next run with the M3 Dinan tune & M50 mani.

[Marv17]

yeah, i can't wait to see the dyno results when you use the dinan M3 software and M50 manifold. since its what i have.