MR2 Owners Club Message Board - View Single Post - 2GR Gutting ACIS?
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post #12 of (permalink) Old August 8th, 2019, 07:37 Thread Starter
Alex W
Wilhelm Raceworks, LLC
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Join Date: Jan 2005
Location: Bozeman, MT
Age: 35
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Well, this turned out to be one of those "Toyota knows what they are doing" things. Preliminary testing based on MAF readings show exactly the same mid range loss as with the ACIS unplugged, and zero top end gain. If anything, it lost a couple of g/s at the top end, but it's hard to pick 1g/s out of the noise on a log of MAF readings.

A little surprising, it looked like it should make a difference! Maybe it would if something else was changed? Could be that the stock manifold is ideal for a motor with stock cams and as you do other things to increase flow the manifold would become a restriction.


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Specializing in suspension and handling for the MKII MR2

Custom Koni coilovers and coilover housings, suspension geometry correction kits, camber/caster plates, big brake kits, and more

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A retro-active build thread for my track / autocross car
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