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Originally Posted by Codyjamesuno
Ok, I have not been on here for sometime but I got a few questions to ask you guys. I had to replace my eibach springs they went bad on my car. so I put
H & R and they seem to ride awesome! The eibach springs came with my car but were not on it when I purchased it, so I had them put on, drove it for 6 months then noticed they were not performing well & were sitting unequal in height. Lessen learned the hard way I guess...
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Eibach springs do sit lower in the rear than the front. They didn't go bad - that's completely normal for them.
Regardless, thank you for the information about H&R springs. Glad you find them to be workable for your application.
Quote:
Originally Posted by Codyjamesuno
...Next issue I have is with my boost controller. I have the Greddy PRofec-Bspec. It has a low and a high setting on it as well as a balance nob. My question is to you, is that something I can adjust myself or something I need to have adjusted professionally?
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You can adjust it yourself, as long as you're sure that you're always running a sufficient octane of fuel in your tank to match whatever boost setting you put into the boost controller.
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Originally Posted by Codyjamesuno
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My boost gauge reads in bar, not psi so I have a conversion chat to reference. What is the safest level of boost I can run on my TT supra?
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That depends entirely upon the exact fuel that you're running in the tank. With USA-spec 93 octane (calculated using (R+M)/2), you can safely run 16psi with the oem ecu's ignition timing curve. Anything more than that and your 2jz-gte's compression numbers will deteriorate over time. Anyone who tells you differently should offer to replace the engine if you follow their advice and the engine gets damaged.
Quote:
Originally Posted by Codyjamesuno
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I have the HKS exhaust, fuel cut, boost controller, turbo timer, cam gears, 3 inch pipe & greddy side mount intercooler & intake, ext. Whats the magic number I should look for, 12 lbs, 18 lbs? Less or more? When I got the car the settings were pretty much set on the middle of both the low and high boost settings. I run premium fuel 91 or better all the time.
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With 91 octane fuel, it's probably 15psi or less. I'd recommend a 1.0 bar limit (~14.5psi)
Have you considered methanol injection?