There is slight decrease in power after 6.5k rpms but it would be nice to see how much you have there.Have sfr trans tune. There wasn't any more power up at 7k. Soon as the car peaked he let off. I'll do some more things and dyno each step if I can
Do you still run Ceratec additive in yours?Last dyno from our shop car. BK2 3.8 NA 343/310 View attachment 76366
We're almost at 350whp mark, which means we're making at the wheel, what Hyundai rated at the crank. We're still working to get to the 350whp mark, but also have it carry to 7500rpm. At 7500, we're still making 320whp which makes this car insanely fun to drive.
BK2 3.8 NA
Tuned by Alphaspeed
All port work done by 3point8 Performance
Dyno was at 4200ft elevation. If it was sea level, or 50* weather no doubt it would have hit 350.
I been using Cetatech for few years, this year I dumped Cerma oil additive.+1 Ceratech.
Started using friction additives and oil stabilizers too.
Mobil 1 is the one to stay away, especially those who have turbo. Elevated temp protection drops 36%, numerous Gens with blown motors who were using it (tends to disappear on you), lost 1 quart between oil changes.Quaker state may have changed since the mid nineties, but it sludged up my z28 bad.
Never went back to using it.
1994 z28 changed oil with pure sythentic religiously.
Used Mobil 1 ever since , my 2008 CTS now has over 268,xxx miles and still going.
I did oil analisis after running Mobil 1 in Genesis and twin turbo 3.5 EcoBoost and both had elevated ware (lots of hard driving on both, 5k mi intervals) while Quaker State stntetic 5w30 tests ware normal wear.Almost 300k miles and the engine runs great. Mobil 1.
Supercharged vettes/camaros/AMG Mercedes all use mobil 1.
Could be they pay the manufacturer to use/advertise the oil? I know it was great in my z and now great in the CTS.