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09-25-2007, 07:32 PM
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#1 (permalink)
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ndmus88gteng
Join Date: Sep 2007
Posts: 96
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mass-air conversion
I need to change my 88 gt to mass-air, I have the wire kit , need the meter and computer, which one is best to use a9l, or the 93 cobra, dont know which it is,
whats the best meter to use I have a 75mm throttle body bbk does that make a diff ? thanxs
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09-25-2007, 08:42 PM
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#2 (permalink)
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MontegoMan351
Join Date: Aug 2006
Posts: 712
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Re: mass-air conversion
Auto or 5-speed?
Cobra uses 24lb/hr injectors & a matching mass air meter.
A9L is a 5 speed PCM.
A9P is a AOD PCM.
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'73 Montego MX 357C Homebuilt EFI, 9.5:1 comp, mild cam, 30lb injectors, A9L computer, Moates.net chip, 70mm TB, 76mm C&L mass air.
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09-26-2007, 08:56 AM
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#3 (permalink)
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ndmus88gteng
Join Date: Sep 2007
Posts: 96
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Re: mass-air conversion
hi, its a 5-speed, I would like to add either head/cam or maybe just 8-10 psi supercharger,would like 400 rwhp but can the stock eng take it ,,, what puter goes in the 93 cobra, just add puter and 24 lb inj. and its ok to run it?
thanxs for the info, get a meter for 93 cobra as well?
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09-26-2007, 04:56 PM
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#4 (permalink)
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MontegoMan351
Join Date: Aug 2006
Posts: 712
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Re: mass-air conversion
Yep, the Cobra used it's own specific mass air meter...they can sometimes be a bear to find. You may want to go A9L, and get a Tweecer to tune the S/C in the future...or have it dyno tuned.
______________________________________
'73 Montego MX 357C Homebuilt EFI, 9.5:1 comp, mild cam, 30lb injectors, A9L computer, Moates.net chip, 70mm TB, 76mm C&L mass air.
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09-26-2007, 05:07 PM
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#5 (permalink)
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ndmus88gteng
Join Date: Sep 2007
Posts: 96
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Re: mass-air conversion
ok thanxs man ,, I found an A9L on e-bay with a $110 buy it now, I went up to 80 and still not to reserve yet, I wanted to check in here first, and see what every body says , I might buy it but I still need meter, one guy has 70 mm cobra polished mm. and 24 lb inj. for like 200 b,i,now, do you think they would be good to go w/A9L, an a s/c then have a custom tune , on it
thanxs for any info , trying to put together a maf, that I can up grade power level , w/out having to replace the whole thing thanxs man
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09-26-2007, 07:59 PM
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#6 (permalink)
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MontegoMan351
Join Date: Aug 2006
Posts: 712
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Re: mass-air conversion
You may want to wait untill you get the blower before you upgrade injectors...because depending on boost...you'll probably need way over 24lb/hr injectors...you may need more fuel...say 30-38-42lb/hr or more depending on...again...boost levels...then you'll need a pump to support it...and fuel lines...etc...
I'd say, get the A9L, convert it, use the stock 19lb/hr injectors for now, wait untill you want to do the blower...since 24lb/hr injectors are too much for a stock 302 (unless you do a heads/cam/intake swap to use the fuel), and then upgrade the injectors...that's my opinion.
As far as the MAF...you can have a mass air meter programmed, like Granatelli, Pro-M, etc, there's also a company called C&L Performance...I've got one of their 76mm meters on my '73, and havent had any problems, all you have to do is change the sample tubes in the meter housing and re-use the factory electronics.
______________________________________
'73 Montego MX 357C Homebuilt EFI, 9.5:1 comp, mild cam, 30lb injectors, A9L computer, Moates.net chip, 70mm TB, 76mm C&L mass air.
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