Re: Which one of the Split-Second boxes are you using? - Saab 900 Bulletin Board - Saabnet.com
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Re: Which one of the Split-Second boxes are you using?
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Posted by Steven Mitchem [Email] (more from Steven Mitchem) on Sun, 5 Aug 2018 14:55:05 Share Post by Email
In Reply to: Re: Which one of the Split-Second boxes are you using?, Brandon K [Profile/Gallery] , Sat, 4 Aug 2018 20:51:11
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I'm using the same injectors,with Jack Stoll fuel chip. Idol is good. There is no relay for the split-second computer. It's all done with the one split-second computer box. I've never really diagnosed it but it runs to the air mass meter to the ECU back inside the car where the computer is at. Now my car is a 1986, it also looks like it runs over and connects somehow with the ignition module on the left fender. And then he spent several weeks driving whenever he had the spare time to set up the ignition maps and the fuel Maps. It has ran so well I have just left it alone he said that was just a starter tune but it seems pretty perfect to me. The water injection I can adjust, I have it kick in at 4 pounds of boost and it's at a constant 45 PSI of water injection until I let off the gas. Runs up to about 20 lb of boost ,by 7000 RPMs it's down to around 11 on the air fuel ratio gauge. I have full Boost by around 3, 000 RPMs. I'm sure if I went in and I played with the ignition and the fuel maps I could easily get 25 lb of boost I just don't know how long the tranny would like that. I had EricksonIndustries build me a 4-speed that I found in a junkyard, it lasted about 8, 000 miles before 3rd gear let go. You do have to remember that transmission was from 1977. I still took it easy in first and second, it never saw more than about 10 lb of boost when I autocrossed. Cost-wise I would probably just do the T5 swap. The split-second box was 500 bucks. I don't think it's on their website I had to call them and tell them what I wanted,Brad gave me the information to give to them. External wastegate has a 7lb spring in it. I hope I answered all your questions. Feel free to ask more. Keep us posted on what you decide to do.

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