After logging some OBD 2 data (IAT, Timing, Throttle pos.), found out my IATs needed some work.
I modified the snorkel setup I had with some suggestions from Alex (@flipm3) and Sal (@evolve_auto) and snuck in for a few runs this morning. Quite pleased with the results with my 97,000 mile beast.
-91 octane (winter-blend crap)
-Borla v2 with cats (http://www.custom-performance.net/pr...idproduct=1171)
Ebay headers and Borla midpipe come off tomorrow. Supersprint Stepped V1 headers and catted section 1 go on in their place.
Nice results Mike! I bet you can feel the difference in how the car drives as well.
Here is what is waiting for me tomorrow morning
and an SS resonated section 2 (no pics sorry).
I would be pleased with another 5-8 whp with the new parts.
@normcaldwell could tell the difference when he drove mine and he has 3.91's in his beast. Paired with a high revving N/A six soon to be 8,500 rpm red line (head will sustain 9000 when done) I will be in the high 30's maybe 40 at the top of 1st.
For you Joe. Old but still relevant: http://ls1tech.com/forums/2811675-post15.html
edit: first tune comparison graph I posted was with the same OE box and they both were MAF based tunes. Evolve's tune beat that one everywhere. About 20+whp/15rwtq delta in the 4000-6500 range.
Sticky, not sure what you are nitpicking this time. The first dyno in the thread compared two MAF tunes; not Alpha-N to MAF. Apples to apples. I'm sure if I paid for more dyno time the original delta would have been much higher if the Evolve tune had the chance to adapt as the ESS tune had 10,000 miles plus.
This last comparison was only changing snorkel setups. You're thinking too much.
Back to header removal...
Good stuff man. NA power FTW. :)
I was wondering how CSL's work in different parts of the world with Alpha-N? Did BMW tune the cars specifically for the destination each car was headed too?Quote:
Originally Posted by MisterEm
headers are off. Beer 30 time