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The mkiv Supra Owners Club

HKS EVC - Fault ? Or setup issue ?


Muffleman

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One of the reasons we had to abort the higher boost tuning on my car was that the EVC boost controller was under reporting boost, and Gary at gt-art said that there was a fault on it. So it was sent back to Trial, they have returned it and it's the same. These two pics were taken with the engine off:

 

(Apologies for the blurring, but had to turn the flash off)

 

http://img413.imageshack.us/img413/6628/evc002smallts1.jpg

 

http://img413.imageshack.us/img413/3632/evc003smallzh7.jpg

 

What I was told was that the throttle position is showing at 100% all the time (top left of the EVC), and this is wrong but couldn't be cured by a reset.

 

Also, even when off the boost flutters between 0.00 and 34mmHg (pic 2) and the revs flutters between 00 and 33000rpm.

 

When driving, the throttle position stays at 100%, and the revs is usually at 15000rpm. (I wish :D )

 

I'm starting to think a visit to Mr. Harwood is the way forward on the electrical gremlins, but wondered if the above is likely to be a fault with the EVC ? Or a setup issue ? Or a wiring issue ? The wiring side gt-art have recently done.

 

Cheers

 

 

 

Matt

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It is a very old boost controller and probably has a fault (I had a IV expire after just a couple of years).

 

How about a brand new Blitz i-color to go with the rest of your colourful car :) I'm organising a group buy at the moment see here:

 

http://mkivsupra.net/vbb/showthread.php?t=75766

 

http://www.blitz.co.jp/products/electonic/iColor_series/SBC_IC_slide.gif

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  • 2 weeks later...

Well this is weird. My boost gauge was knackered as per this thread http://www.mkivsupra.net/vbb/showthread.php?t=75134&highlight=boost+gauge. Kept my eye on ebay and eventually found a second hand boost gauge exactly the same. Won the auction, fitted the boost gauge and voila ! the boost gauge is working fine.

 

Thing is, now the boost controller seems to be working :confused: The rpms go up and down, the boost controller is reading the same as the gauge. Oh well.

 

Met up with Mr. Harwood at JAE and had a chat, agreed to pop down there to check this out and I think I still will - peace of mind and all that. Tis strange that it's now working.

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