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The mkiv Supra Owners Club

Boost gauge fitted - Low boost???


Bob

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Having fitted my spangly new Blitz gauge today (mechanical Mirror Drive shiny type thing :D ), the initial readings seem fine (from searching other posts) - -0.7 to -0.8 at idle, rising to 0.5 at medium acceleration.

 

However, after giving it some, both in Manu mode and normal drive, down a stretch of 'private testing road', the maximum the gauge read was a lowly 0.7bar of boost.

 

Does that seem a bit low? I thought standard boost was 0.9 bar on the soop? I've checked all the pipes I can see, and there doesn't seem to be any loose ones at all.

 

Mods-wise, the car's stock. Standard air box (anyone wanna buy a Blitz SUS?). Not sure whether the exhaust is a proper Blitz one or one with a blitz pipe welded on the end.

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Dammit, now you've made me start shopping for a full decat! lol

 

Would you suggest a restrictor ring with that, seeing as it's only gonna be on stock ceramics?

 

Currently saving up for a set of big brakes, and got Nic's TRD coilovers on their way :D

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Dammit, now you've made me start shopping for a full decat! lol

 

Would you suggest a restrictor ring with that, seeing as it's only gonna be on stock ceramics?

 

Currently saving up for a set of big brakes, and got Nic's TRD coilovers on their way :D

Once you mod - you can't stop! :lol:

 

Yes - a restrictor ring is crucial. It'll keep you at a stable 1.2 Bar - instead of overboosting to 1.4 or higher.

 

Get rid of the stock exhaust & Fit an aftermarket straight though exhaust system.

 

Speak to Terry S - he stocks the BoostLogic 4" exhaust systems. Imo - they are the far superior to the RSR & Blitz. They're not that much more expensive either .. perhaps £75 maybe.

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Eek! Just looked at the Vortex site - BL exhaust comes in at £800! Think it may be a little out my price range there . . . .

 

Been looking at (and getting tempted by) the HKS Dragger 2 over on the Whifbitz site :)

Terry is doing the exhausts at discount prices - PM him to see if that deal is still available.

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