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Cayman Dyno ChartsThis is the forum to post your dyno charts showing the results of various performance modifications.
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just got the raw dyno data excel format. Dynoed on a Dynapack. Finally Dynoed with torque numbers. And a facility that knows what they are doing. For those of you who dont know Dynapacks are attached to the axle Dynapack
Mods are:
Milltek Headers
Milltek Exhaust
DeSnork
K&N filter
APR 93oct program
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Cayman GT
369BHP 325LBSTQ
313WHP 276WTRQ some people like the regular stock factory look, cool people modify the car.
Last edited by porsches4ed; 11-13-2007 at 04:34 AM.
sad thing is I should have dynoed with no mods. At least we know Milltek adds ~15-25WHP APR added the rest
Don't forget your desnork and K&N filter. I've had some reports of K&N filters alone adding 5-10hp when coupled with a de-snork. Yes your assessment that you should have dyno'd before any mods is correct. Also your chart is a little awkward in that your peak hp is way early but that could be the smoothing that was used or could just be the way they run their dyno. All in all, good numbers and likely an improvement over what you had stock, but again no way to know exactly what mod is doing what without the original baseline, etc.
Just be happy with the numbers and when you put your foot down.
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Time to add plenum and perhaps bring the torque and HP on earlier and longer?
Plenum
The plenum is the piece that goes between the Cayman throttle body and the intake runners. The factory piece is a long black plastic tube with a divider down the middle. There are aftermarket replacements which are designed to allow the air to flow easier/faster into the engine and increase horsepower and torque.
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Transplant from Alaska => Arizona. I like it HOT!
Don'tmiss scraping my master's windshield, winter oil, winter tires, chains, pluggin' in the car over night--block water heater! and interior warmer. And having to put anti-freeze in my GAS!
Domiss slippin' & slidin'. To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
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Why more modoholics don't do step-by-step dynos using a GTimer or equivalent, I don't get. My mod-virgin CS gets here in a week, and the GTimer is rarin' to go (though the weather sure ain't). Gonna use it not just to measure the effects of mods, but to measure the health of the machine over time.
Why more modoholics don't do step-by-step dynos using a GTimer or equivalent, I don't get. My mod-virgin CS gets here in a week, and the GTimer is rarin' to go (though the weather sure ain't). Gonna use it not just to measure the effects of mods, but to measure the health of the machine over time.
Agreed. I am going to do the same thing when my CS arrives in about a month. Get to know her for a while (few months at least) and find out what the stock #'s are then incrementally make changes and chart the difference using the Gtimer.
Agreed. I am going to do the same thing when my CS arrives in about a month. Get to know her for a while (few months at least) and find out what the stock #'s are then incrementally make changes and chart the difference using the Gtimer.
Sorry boys but I had a Gtech Pro about 7 years ago, it read that my stock 1.8t audi had 250HP (180HP from the factory)and my stock jetta had even more. it is not accurate in my experience. It measures using Gforce so if there is a dip in the road or you turn it is not accurate. **this is with my experience** I would love to have one but maybe they are better now. Dyno companies would be out of business if they worked IMO
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Cayman GT
369BHP 325LBSTQ
313WHP 276WTRQ some people like the regular stock factory look, cool people modify the car.
Sorry boys but I had a Gtech Pro about 7 years ago, it read that my stock 1.8t audi had 250HP (180HP from the factory)and my stock jetta had even more. it is not accurate in my experience. It measures using Gforce so if there is a dip in the road or you turn it is not accurate. **this is with my experience** I would love to have one but maybe they are better now. Dyno companies would be out of business if they worked IMO
I agree that there could be huge error, but if you have a set reference area and used a standardized methodology each time you took readings the accuracy could be improved considerably. Same exact stretch of road, same start procedure (5 mph rolling start for example), same amount of fuel in tank, and you could even try to get similar weather conditions. Even if the numbers don't correspond exactly to the true bhp they would be relate to each other and therefore be a useful gauge of mod effectiveness.
