Very disappointing low dyno numbers please help!!!!!!!

AlphaSnacks

Every Z is different with mods, and the AFR will never just be lean or just rich - it's usually a mixture of both throughout the powerband. Before my tune my car was running really lean in the low-end, high 14s/low 15s. After 3K RPM, the AFR got richer and hit 13s. But after 5K RPM the mixture got pretty rich and was in the 11s and sometimes high 10s. With my current tune, AFRs should be in the lowish-12s across the board.

I'm going to re-log the car and look for timing adjustments that can be made, as well as any possible flat-spots in the AFR (anything outside of the 12 range past 1500RPM, basically).

Edit: Also dynoing nearly a year later negates the purpose of comparing dynos, even if the temp and machine were the same.

SS_Firehawk

There are some things that just don't add up that we already know and I don't think looking at traps will be any benefit. This was on a dynojet with similar weather and temps. If we could see a graph or get you a/f read, this may help. There has been more than a few people who have gained 25-35hp to the wheels tuned and untuned with similar mods. Either the dyno is not reading correctly or it's your car.

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Mandingo

Run that tank of gas through and get the highest octane rating you can (91 is the highest there?) from a station that you know to have quality gas.

Then dyno in 5th gear.

I recently filled up with nonamebrand 91 octane from a grocery store to use up our 'gas reward points' Bad idea. My car bogged down off the line and just generally felt unhealthy until I diluted the tank with some 93 octane.

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some mods