Originally posted by LaoBoyJames
Gotcha. Hey Blue Bomber what would be your guess though (just a guess) on the peak hp output with an Injen CAI+TPR exhaust? I mean obviously it hasn't been done but Ive seen that an avg celica with a TRD and Injen combo(GTS of course) produces 174hp I may be wrong, and since TPR obviously produces more than TRD that would make it around the range of MWR's injen+pfc combo of 177hp safely tuned, and again I wanna emphasize "guess" and "around". Flame away its okay...
Most likely it would be about the same as a TPR CAI with TPR exhaust up high. The TPR CAI and Injen CAI are neck and neck in top end (a different story in low and mid), but it's unknown if the MAFS fins and better MAFS placement of the TPR CAI would have more of an effect up high when an exhaust is added (engine runs leaner than with a CAI alone). Give it a couple months when the 2nd and 3rd TPR exhaust GBs are finished, people have the exhausts installed, and a few hopefully dyno them. Then we'll get to see how other intakes respond to it, along with other mods like headers and the PFC.
Like nyoneway said, though, comparing dynos isn't an exact science. A ton of things influence the cars power output, including air temperature, humidity, engine temp, engine condition, fan on/off, hood open/closed, dyno accuracy, etc. Differences in most of these will alter the dyno from one day to the next (some will even alter dynos done 5 min later), so dynos need to be done on the same day under the same conditions to be accurate and useful for comparison.
The most important difference, though, is the power that the car was making stock. Not all cars dyno the same stock, and that difference affects all future dynos. If you see a car with I/E making 170, and another with I/H/E making the same power with different I/E combo, you may think the parts on the second car are inferior. But in fact, the car with I/H/E may have been making 5hp less stock, which would in turn make the gains of the I/H/E more resonable. Without a recent baseline stock dyno on the same car for comparison, measuring the gains of multiple parts can be pretty innaccurate, and comparing that dyno to other cars' dynos is basically impossible.
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