Single Turbo RX-7's Questions about all aspects of single turbo setups.

boost controller

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Old Nov 16, 2001 | 04:09 PM
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boost controller

Im lookin at two different boost controller used that I found for pretty cheap.
First is a Greddy Profec A says he has all the parts and it still works fine.

The other Is the HKS EVC Im not sure much else. He says it has the green lcd screen, so I think its not the EZ one.

They both seem to have the same functions, so what one do you guys prefer.

Oh yeah the HKS is $50 cheaper.
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Old Nov 16, 2001 | 07:40 PM
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For a single Turbo? Profec A.
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Old Nov 16, 2001 | 07:59 PM
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that seems to be the favorite around here.
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Old Nov 16, 2001 | 10:08 PM
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I've never used the EVC, but I've been using a Profec A for 2 years with good results. When it's programmed properly it holds the boost I want.
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Old Nov 18, 2001 | 01:11 PM
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Well I bought it, so I may have to hit you up when I need to install and set it up. I would appreciate any help you could give
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Old Nov 18, 2001 | 05:24 PM
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Originally posted by live4boost
Well I bought it, so I may have to hit you up when I need to install and set it up. I would appreciate any help you could give
Greddy used to have programming instructions on their web page, but they may be gone now.
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Old Nov 26, 2001 | 02:41 PM
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Any of you guys ever use an adjustable pressure relief valve for a manual boost controller? I made one for a friend, who has a modified TII, using this valve I got from Grainger and a couple fittings. It works great! The wastegate is completely closed, so it spools quicker, until the set boost is reached and then it stays exactly at that boost level. It is adjustable up to 20 psi but can you change the spring inside the valve to get higher levels. His car is currently set at 15 psi. (410 RWHP @ 18psi on dyno)
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Old Nov 26, 2001 | 05:48 PM
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Originally posted by surfpac
Any of you guys ever use an adjustable pressure relief valve for a manual boost controller? I made one for a friend, who has a modified TII, using this valve I got from Grainger and a couple fittings. It works great! The wastegate is completely closed, so it spools quicker, until the set boost is reached and then it stays exactly at that boost level. It is adjustable up to 20 psi but can you change the spring inside the valve to get higher levels. His car is currently set at 15 psi. (410 RWHP @ 18psi on dyno)
Alot of people use setups like that. I've heard that you can get spikes in the higher gears, but that's usually with the cheap valves from home depot racing.
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Old Nov 26, 2001 | 07:31 PM
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Originally posted by 13BAce

Alot of people use setups like that. I've heard that you can get spikes in the higher gears, but that's usually with the cheap valves from home depot racing.
Hey thats what I run! I haven't had too many problems, I do get slight spike and creep sometime. Come spring I'll have a profec B or Blitz SBC-ID
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Old Nov 26, 2001 | 10:35 PM
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There is absolutely no spikes or boost creep with the pressure relief setup. None whatsoever. It's set for 15psi and it stays there. Check out these links on DIY boost controllers.
http://pages.cthome.net/gus/mike.html
http://www.c-speedracing.com/howto/mbc/mbc.html
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Old Nov 26, 2001 | 11:23 PM
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i'm probably going with the profec a
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Old Nov 30, 2001 | 03:07 AM
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got a profec A but switching to blitz sbc id
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Old Nov 30, 2001 | 10:48 AM
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Originally posted by soul assassin
got a profec A but switching to blitz sbc id
Why are you switching? Is it alot better?
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