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#1
06-07-2005, 08:24 PM
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what's wrong
Hey, I have a 91 MR2 turbo with an HKS Hi-Power exhaust, k&n filter, greddy intercooler, and run 14 psi with the greddy profec b spec II boost controller. I also replaced the cap, rotor, and wires with toyota parts and replaced the plugs with NGK's. I just did a compression test and each cylinder was around 185. The problem is I only run low 15's in the quarter mile. Any suggestions on why that is?
Thanks in advance 
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#2
06-07-2005, 09:12 PM
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Re: what's wrong
What rpm are you shifting at?
What's your 60' time? What's your mph at the end of the track?
__________________
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#3
06-07-2005, 09:19 PM
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I shift at 5500
60' was 2.057 mph was around 89
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#4
06-07-2005, 09:30 PM
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Re: what's wrong
You should redline 1st ... 5500 is about right for the CT26 turbo for the rest of the gears.
Your 60' is fine. It is possible to nail a 1.8 or 1.9 with a stock MR2. It takes practice and you may want to drop your rear tire pressure depending on what you had them at. Your mph is very low for your level of mods which means you are down power. What did you gap the plugs too? What octane fuel are you running? What elevation was the track at? How hot was it outside?
__________________
Sponsorship: Amateur Motorsports <-- Get the book! - books are now available for shipment
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#5
06-07-2005, 09:43 PM
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the plugs were gapped at .28
i run 93 octane fuel I'm not sure about the elevation but I think it's low the temperature was about 78 degrees
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#6
06-07-2005, 10:31 PM
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Re: what's wrong
How fast do you shift? What kind of tires do you use? How is your alignment? How heavy and what size are your rims and tires?
__________________
hello, i am Dan No more project cars. I wonder how long that will last...
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#7
06-07-2005, 10:47 PM
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I try to shift as fast as I can. The tires are some kind of Firestone something, not sure. I bought the car from an older man who wasn't using it for any kind of racing so i'm sure they aren't the best performance tires. Haven't had the alignment checked but the car drives as straight as can be with no unusual tire wear. I still have the stock 14 inch wheels and stock tire size.
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#8
06-08-2005, 05:40 AM
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Re: what's wrong
I sure hope you mean he gap was .028", not .28"
 Elevation, temps and fuel check out. I don't think tires are the issue since you managed a very respectable 2.0 in the 60' Somewhere, somehow you are down power. Do you have excess weight in the car? (like an extra 200 lbs of stereo equipment or something?)
__________________
Sponsorship: Amateur Motorsports <-- Get the book! - books are now available for shipment
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#9
06-08-2005, 06:31 AM
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sorry, I did mean .028"
The only modifications that I have done to the car have been the performance mods. The only additional weight in the car would have been me and the spare tire. I weigh 165 lbs and I wouldn't think the spare tire would slow it down that much.
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#10
06-08-2005, 07:46 AM
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Re: what's wrong
No, the spare and your body weight are not a big deal. I just wanted to make sure you did not add a 100 lbs of subwoofers and 15"s
 So, we are back to your car being down power. You should be easily trapping well over 90 mph, so something is up.
__________________
Sponsorship: Amateur Motorsports <-- Get the book! - books are now available for shipment
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#12
06-08-2005, 04:19 PM
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No, the clutch grabs like it should
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#14
06-08-2005, 08:12 PM
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Re: what's wrong
yea the rear end plants on take off with no wheel hop
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