Thread: s4 dyno!

^I was thinking the same thing. That's like $500-$600 dollars or so for 3whp.

I had the hotshot gen4 headers when it dynoed 159 on 19° timing. After that i installed the 2.5 headers but never dynoed. But yeah you can say $500-$600 for pretty much nothing the only good thing is that at redline im up about ~10whp or so.

I don't know a lot about S4 vs. S3, but plot reminds a lot of S3's on a KADE24 (other than the rev range, lol) - and the S3's on some old SCC cam-swap testing.

Cams like S3's seem to deliver about +10whp peak, mostly up. Back when SCC had my car they did a large amount of cam testing on the original motor (OEM, USDM vs JDM 10:1 I have now). Pretty serious gains but lots of JWT Tuning time, esp for the C2's. Dave C, Mike K, and Rob whose last name I don't recall were doing a lot of this testing:



IIRC the C3's are practically full-on race cams. I have a new set of C2's not yet installed, the ECU has a switchable maps for stock + 2 profiles for the C2's, and +37 whp peak is pretty impressive, but it's still easily $1000 investment for the hp, lots of $$$ there and the S3's/S4's look like a better choice for street-friendly. Also I like Calum's work, the RT ECU I have for my KA is nice work.

Sorry this pic isn't bigger, it was before I uploaded it, stupid photo gallery. Notice their dropoff well before 7100, too. Max gain came at 7100-7300 over stock, but max hp was back down around 6500 - a lot like the average I/H/E stock DE w/ECU.

Also keep in mind he was running earlier Hotshot header and 2.25" DP, not 2.5 or the larger 4:2:1 SSAC primaries:



Last pic the car wasn't running well, it was hot as hell, yet still pulled a 161 whp around the same rpm range.

Forgot to add the C2's were ~20 deg timing

What ECU do you have now? Am I reading wrong I don't see it?

Pictures don't work superblackz. Im still on the stock ecu.

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^The tune most be killin you bro. 3WHP with a cam and header install at the same time don't sound right. See what Calum can do for you and then get back on the dyno.

I installed the headers awhile back before the cams. But winter is coming so ill have to wait for next year. By that time the 4-1 headers should be out.

From your lips to god's ears. Make sure to budget for Calum's services.

Yes ill be budgeting for Calum's services.