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KA-T question


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240SXSlideStar
02-19-2006, 02:16 PM
If i get 370cc SR injectors and keep using the stock mafs, can i get a 10:1 FMU to work? Cause I found a few parts for cheap that could get me boostin soon. lol

TatII
02-19-2006, 03:09 PM
with the larger injectors you will need some way to make the car run leaner. the ecu has no idea that your putting in larger injectors so it would just spray away thinkin its a 280cc injector. this will make the car run 27% richer at all times.

so a 10:1 fmu will do the opposite of what you want. you would need a SAFC to tune down the injectors.

if your gonna just go for like 6-7 psi, just keep the stock injectors, run a 8:1 fmu with a fuel pump and pull some timing back and you should be good.

D-Bo
02-19-2006, 03:15 PM
i believe this would be what you're looking for.

http://search.ebay.ca/search/search.dll?sofocus=bs&sbrftog=1&fstype=1&from=R10&satitle=safc+II&sacat=-1%26catref%3DC6&bs=Search&fsop=1%26fsoo%3D1&coaction=compare&copagenum=1&coentrypage=search&sargn=-1%26saslc%3D3&sadis=200&fpos=K2G3G3&ftrt=1&ftrv=1&saprclo=&saprchi=

good luck with it, i had best be lookin at the next ka-t soon

240SXSlideStar
02-19-2006, 04:56 PM
The one for sale is a 10:1 FMU so.....lol

And you also need a wideband O2 gauge if u get an S-AFC...so $$$$$$$$

driftking777
02-20-2006, 12:21 AM
or you can just have it dyno tuned...and thats cheaper than getting a wideband...becuase tuning your safc is pretty much a one time deal, unless you upgrade some more, then you can just dyno tune again...and thats fun anyways, becuase then you can see your progress

TatII
02-20-2006, 01:38 AM
not true. the AFR's jump around by .5:1 when it changes from season to season.

hell my car during hte summer would run 11.5:1 at night and 12.2:1 during hte day time!!! and you would never know that without a wideband. tune it yourself, its cheaper in the end. dyno tuning will cost $250 and thats a 1 time deal. with a wideband, its $320 and you can tune it to your hearts content.

nissanfanatic
02-20-2006, 09:11 PM
eh...you'll prolly see close to that much change on a normal tune... You can't tune to 11.3:1 and it stay right on that unless you do some extensive tuning on a very high end standalone. You would have to tune-to-cylinder each injector....

Just buy the fucking wideband....you're gonna need it when you upgrade to larger injectors anyways.

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