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Old 03-20-2011, 05:20 PM   #4
MA70-3.0GT
12psi boost
 
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Yeah sounds normal behaviour to me, you'll probably find if you quickly blip the throttle quite hard (about 3/4 open, with the engine warmed up already so as not to thrash it cold) that it does the same. the owner's manual pretty much confirms the first reply in that the TEMS ecu stiffens up the shocks during hard acceleration/hard cornering & under heavy braking. The other issue could be just the buttons since the ones on my car don't seem to stay in place very firmly & the slightest inadvertant knock can swap between normal & sport mode.

If the switch is very definitely pushed fully home in the normal position when it goes to sport then it could maybe be a bad connection/short in the switch or wiring from it, though it could be beneficial to run the TEMS diagnostic just in case that shows any irregularity. To be honest I'd be tempted to leave it in sport anyway (then again, with lowered suspension & the amount of damnable speed bumps round here I need all the help I can get to keep my baby's belly from getting roadrash!)

Hers's a link to the TEMS section in the tsrm, flick through that & the diagnostic checks are detailed for you... http://www.cygnusx1.net/Supra/Librar...aspx?S=FA&P=29

HTH
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'89 MA70 Supra GT aero 3.0turbo JDM, Rebuilt motor, K&N intake, 3" stainless turbo-back. New turbo and braided line kit...

'89 Honda NC27 400, NC23 cams, open pipe, PC36a shock & possibly Showa USD forks...

'83 Yamaha 29R XJ750E-II, number 69 off the line, only runner in the country? Original except Koni shocks

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Last edited by MA70-3.0GT; 03-20-2011 at 05:24 PM.
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