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Originally Posted by Thor06
You made 250 on 17lbs of boost and a crappy tune right crunchy? How much boost will the stock HG hold?
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I made 250/295 with a boost spike to around 22, then boost tapered off to around 17, that's why my curve was all messed up, cams will fix this. It wasn't a crappy tune, it was a safe tune. I need this car to last, so we were very conservative with timing and fuel. It could have easily made more power, but that would have just been a number, I care more about the tune the car sees every day.
The stock headgasket is usually good to about 21psi or so. BUT, knock will kill a headgasket MUCH faster than running a lot of boost.
Just remember that with the safc you can't retard knock, so once you start knocking, the computer will retard timing like a mofo. It's doable, but the engine will have to be in great shape with a good tune.