Well I threw the car on the dyno today quick before a customer came in to get a requested dyno since i tuned the exhaust up. Remember I had exhaust on the first dyno just added the magnapacks where the resonator delete was since then. I tired to get the air temps as close as I could to the first dyno, if you recall the first time I was at 70 degrees and average humidity. The car was cool but I had to get it in when i could so it was about 68 degrees early this am and much higher humidity.

Results were about as expected. Af was almost dead on the last runs in the 12 range under boost up to 5500 and then slipping to 11.5 and 11 from 5500 to 6k where I shut it down. I monitored boost this time but unfortunatly the gauge hung at the 12.5ish peak on my first pull. Only made two pulls and I had a better idea on how to run the car on the dyno.

The results were 339hp 368fptq on run one and oddly 341hp and 369fptq the second run which I would have though would be less due to heat? My last runs on the dyno were like this as well picking up power on the second run...Albeit not much.

So about the same power as the first runs. I think the slight pickup was due to slightly cooler weather despite the humidity and my learning how the car runs on the dyno as in where to roll into it rpm wise.

I didn't get a graph sine i was rushing to get off the dyno in time but its pretty much as expected except for some reason my AF seams really good compared to most.

I think we might have found the cure to the ecu tuning with a piggy back along with some help. I will keep posted as it proceeds waiting on some more info and advice

EDIT: if I could have had the same conditions of the first runs water grain wise it should have been much better pickup.

 

Nice pulls. The stock (or near stock) torquiness of the STR always makes me smile. M3? Eh..... :-)

 

Me to I am shocked every time by the Tq from a relatively small motor. You need it to get this big lug rolling!

Water inj and 3# Boost increase hopefully next week or so. Also ordered a boost gauge for the cat

 

Yes yes mr dust a bmw...

Those are decent pulls....

Take care,

George