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injector size?????

This is a discussion on injector size????? within the External Engine forums, part of the LSx Technical Help Section category; thinking of swapping out injectors and m.a.f.... any sugestions, or anyone know of a good deal? and what else would ...

  1. #1
    Junior Member ls1alltheway's Avatar
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    Question injector size?????

    thinking of swapping out injectors and m.a.f.... any sugestions, or anyone know of a good deal? and what else would i have to upgrade with this mod?

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    Formulatastic yellowv's Avatar
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    Quote Originally Posted by ls1alltheway View Post
    thinking of swapping out injectors and m.a.f.... any sugestions, or anyone know of a good deal? and what else would i have to upgrade with this mod?
    WHy do you want to switch MAF and injectors? Are you making 500+ rwhp? If not save your money.

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    Junior Member ls1alltheway's Avatar
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    no way, i have the intake and exhaust, headers high flow cats the whole 9 yards. i,m going to port and polish the t.b, figured swapping the injectors and m.a.f would help a little. am i wrong in thinking that? will they supply enough fuel if i do the above mods? oh yeah im going to cut out the egr tube also.... thats if i don't switch to the ls6 intake.

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    Pathelogical Liar BlackLT1Z28's Avatar
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    Stock MAF and injectors are fine with bolt-ons. You'll only want to consider upgrading if you go with a huge cam or FI. Other than than, they're fine with what you have. Go buy something else.

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    Senior Member bills98ta's Avatar
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    The stock 28.8 injecters do work fine. I upgraded to 30 lb'ers for my 150 dry shot. I increased the WOT fuel for the NO2 and have plenty left to go !!! I think you only need big ones for turbo & superchargers. As far as the MAF, YES !!! Instead of messing with the TB, buy a bigger one..( 80mm ?) I use the 80mm BBK with a spacer and love it !!! Good Luck !

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    Junior Member ls1alltheway's Avatar
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    Thumbs up

    thnx guys, you prob. just saved me a bunch of cash. i will deff. look into the 80mm t.b. though.

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    Junior Member Team Ramrod Customs's Avatar
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    I would go with the BBK 85mm throttle body. I swapped mine to the BBK 85mm throttle body and BBK Intake. I also did the SLP Mass Air flow, bellow and air box lid. Many other mods, but not disappolinted other then the cost.

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    Member z28misfit's Avatar
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    Don't mean to barge in on this guy's post but I was also wondering if its worth the money to do injectors. I'm running a pretty big cam and I'm planning on doing a set of heads. Current power is 412 rwhp so wondering if my stock injectors are good enough to handle heads yet. I believe stock are 26lbhr on 99 Camaros.
    99 z28 cam,m6 ,S60 4.56gears,Fast 90/90 full boltons,more mods one day.
    11.2 @ 123mph.

  9. #9
    Pathelogical Liar BlackLT1Z28's Avatar
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    The thing with the injectors is, they aren't maxed out from the factory. You can tune them to flow a little more than the stock tuning. Open up the pulse width or apply more pressure in the fuel rails (well, something like that). Call the cam company and see what they think.

  10. #10
    Member z28misfit's Avatar
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    Yeah I guess I'll have too.Thanks.

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