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The mkiv Supra Owners Club

tubular manifold for my n/a


Dave
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We did a before and after dyno run on the first one we fitted on Loks (Dave) car here. Unfortunately his car was a little down on stock power (it is an auto so this could have been the reason), so the dyno wasn't really conclusive.

 

Before = 191hp

After = 198hp

 

So a 7hp increase, Dave's car still has second cat in place and RSR exhaust fitted, it may make 2-3 hp without the second cat on a car running above stock power.

 

The exhaust note changed quite a bit, sounds really good when on song, Dave also said it feels more freer revving.

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At a minimum you'd want a wideband O2 sensor, preferably one that will datalog. A dyno would be better, but is more expensive. Typically the NA goes too rich at WOT, and responds well to leaning it out a little.

 

DaveH

'93 na-t PT72/AEM

9.46 @ 143mph

Worlds quickest NA-T Supra

 

 

 

would you need to dyno the car to tune it ???
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