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Location:
Brisbane
Registered:
November 2002
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Tuning MX83 cressida
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Wed, 27 November 2002 13:05
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Hi, all this is my first post here, so be kind  anyways. i have a 89 cressida with the standard 7m-ge motor, i have just had extractors and 2 1/4 exurst put on. should i go and get a dyno tune or anything along those lines done. also are "auto leaders" any good
thanks
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Location:
Perth
Registered:
September 2002
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Re: Tuning MX83 cressida
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Wed, 27 November 2002 17:45
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nah, i personally wouldnt bother, the computer should sort itself out over the next few hundred k's anyway
Peewee
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Location:
Maitland, NSW
Registered:
June 2002
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 Re: Tuning MX83 cressida
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Thu, 28 November 2002 03:29
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I have a friend who tried to gain extra power from a N/A 7m and it shit it self big time, blow out bottom bearings and everything.
I think the previous owner treated it bad but i think you will find that these motors are notorious for blowing head gaskets.
Either replace the motor with a 1j or similar or work the head and head gasket on the 7m.
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Location:
Brisbane
Registered:
November 2002
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Re: Tuning MX83 cressida
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Thu, 28 November 2002 12:51
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the previous owner had the head gasket replaced, cost him a pretty penny.
so how much does a 1j conversion cost. does the 2j fit in. which is better.
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Location:
Maitland, NSW
Registered:
June 2002
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Re: Tuning MX83 cressida
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Fri, 29 November 2002 03:31
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1j conversions depend on a whole bunch of things. Amount of half cut (my friend used a jzx81 from a chaser cost about 2300 i think) exhaust, wiring, and a few extras. it bolts up to mounts ok its just the wiring thats a little bit fiddly, plus some of the sensors can be a little tricky as well, i'd speak to an engineer first, before i start buying. if you need info i can get him to contact you.
Steve
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Location:
North Sydney
Registered:
May 2002
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Re: Tuning MX83 cressida
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Fri, 29 November 2002 09:37
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Probably a bit late but you can't tune a 7m or any other toyota with a factory ecu on it anyway. A dyno tune is useless, you set the base ignition timing with a gun and thats it.
It uses pre-determined ignition and fuel maps so you cant adjust any of those.
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Location:
Bris-vague-us
Registered:
October 2002
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 Re: Tuning MX83 cressida
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Sat, 30 November 2002 00:42
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89 MX83 - Where in Brisdesert did you get the extractors? How much? I have been led to believe that ones designed for the 7m will also fit my 5m. If you know the part number of a pre-fab job that would be even more helpful.
Cheers
Andrew
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