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- 13 MX-5
dynojets arent the dynos that run lower then other.
Depending how big the cracks are in the manifold they could be hurting spool up and power.
You should definetly get an exhaust, it woulda been the second mod on my car after a boost gauge. Thats definetly holdign back some WHP. It doesnt cost much for a used cat-back or even a custom made one at an exhaust shop, and these cars are to loud to worry about the noise so i dont know why you wouldnt get one.
Im guessing the 158/158 graph is the first run you made when you started tuning?
Yeah, I'm tired of modding this car already. I think I rather put my money elsewhere. We'll see about a new cat-back. I said the dynojet at this shop runs a little lower then others because that's what the tuner said when he compares it to other dynojets. And yes, the 158/158 is the baseline.