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 Mazda RX-7s
 Turbocharged NA
 Injector swaping, and S AFC questions
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4 Posts

Posted - Nov 07 2004 :  8:01:50 PM  Show Profile  Reply with Quote
Aaron ... Did you just swap out the primary injectors with tt's , or were they all swaped. I also have a 91 comp. Will the comp. reconize the 88 tt injectors, Or.... When I install the S afc, will it not matter that the 88 tt injectors are different. By the way I will not be using the tt comp, I am eventually going to restore the 88 tt car, using new injectors, 91 turbo, or aftermarket.turbo. It will be a long time but sumtime' in the future. I will also need some help installing the SAFC. I have no experience with fuel computers. I am a mechanic in training, so automotive electricity I understand. But fuel maps are things we dont disscuss in class. Will the SAFC give any instruction on how to hook it up , and tune? I will be tunning a high compression rotor so I will be using race gas at first, then once tuned I will try to run it on 93 octaine down the street. If it runs even a little bad, I will just use turbo blue. I also am dodgeing emissions test so I do not have converters. This is not a daily driver. I know turbo charging a 91 is going to be hard, I have heard it from all the pros' , but f#@k the naysayers I am going to do what cant be done. Thanks ... JOE

Aaron Cake
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Canada
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Posted - Nov 08 2004 :  09:34:18 AM  Show Profile  Visit Aaron Cake's Homepage  Send Aaron Cake an ICQ Message  Send Aaron Cake a Yahoo! Message  Reply with Quote
Turbo II, TII, T2. Not "tt".

Anyway, it says in my turbo-NA page (probably the 2nd page) that I used 4 x 550CC injectors.

Yes, you should be able to run the 88 TII injectors in your 89+ cars as both use high impedance injectors. However, the plugs will be different so you will need to swap.

550CC all the way around is the minimum you should consider for fuel. Much better is 550CC primary, 720CC secondary.

The S-AFC will have hookup instructions, and these are also available on the forum as well (search). There are no tuning instructions, but you can find the basics on the forum...

HOWEVER, if you have to ask questions like the ones you just asked, I don't suggest you engage in this project until you have a little more knowledge.

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