Originally posted by George Hill
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And as of now the setup is making 320/251 with an HTE Performance dyno tune, Supersprint V1 headers and cats, Supersprint oversized and resonated section 2 exhaust and Dinan CAI.
Here's the different combos we tested, not in order of testing but in order of what I think is most relevant. I know some people follow me on IG and I posted about this there as well. Some of the numbers are different because on that post I picked the "middle of the road" run and stated that, but here I took the totals from all the particular runs and averaged them.
*Note I should have put the AFR in the graphs but I just thought of that now and it took a bit of time making all these screen grabs and I don't feel like going back to do it now. Maybe I will in the future though.
2--Euro Tune, V1 & Cats 302-250 (In the past we found the Euro tune does well on Euro header cars so I expected that to be the same here, but I guess with the SS headers it was to lean for comfort so we switched back to the US tune for all the remaining "stock tune" tests).

3--US Tune, V1 & Cats 306-250

4--US Tune, V1 & Cats, S2, Stock Intake 308-250

5--US Tune, V1 & Cats, S2, CAI 309-249

6--HTE, V1 & Cats, S2, Stock Intake 320-253 (Note this tune was not optimized for the stock intake, but it is what HTE did for the Dinan and we just swapped back in the stock intake to see if there was a change.)

7--HTE, V1 & Cats, S2, CAI 320-251

8--Baseline to Final

I'm really surprised at the results of the Dinan CAI vs the Stock intake. We've seen about the opposite in change (small bump with the Dinan CAI vs stock) on a euro header car. I would be curious to know if there is something else that is now hindering the setup, maybe we will try an oversized intake elbow next? Also, we had been waiting on a new Dinan muffler so all of these tests were with a stock muffler. The Dinan is here so we will get it installed and schedule dyno time to see the change that one has. Also note that all of the runs were broken up over 3 different trips -- 1. Baseline, 2. Euro/US Tune with SS V1 & Cats, 3. All the remaining







. BUT what's interesting is she still runs 111mph +/- in the quarter mile

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