408 on the dyno friday

[maze2525]

so a MS4 in a 408?

im betting torque is around 415-422

your numbers are about right for that combo,enjoy your combo

Yes you are correct. The tq was 424, but still can't understand why its throwing a code one time at 6200 then the next time its not. And yes its still the 5.3 maf who makes a bigger one? Im not getting enough air threw it for the top end

[George C]

all the mafs are the same for the gmt800 trucks. if maf size is restriction time to go SD

Yes you are correct. The tq was 424, but still can't understand why its throwing a code one time at 6200 then the next time its not. And yes its still the 5.3 maf who makes a bigger one? Im not getting enough air threw it for the top end

[maze2525]

So no one makes a bigger one for these trucks..... and y sd thought they went away from that for a reason.... just askn questions cause this kind of build is all new to me. Is it cause its n.a? I plan on turbo and cam for turbo later on. Is the sd what everyone doing for trunk also?

[George C]

you can get a 100mm maf but what is the point? youre not going to gain performance from it, if you want to spend another few hundred dollars on a part that isnt going to gain you anything then go right ahead.

So no one makes a bigger one for these trucks..... and y sd thought they went away from that for a reason.... just askn questions cause this kind of build is all new to me. Is it cause its n.a? I plan on turbo and cam for turbo later on. Is the sd what everyone doing for trunk also?

[flaco]

i was about to say the same on cam, being an ms4...like quik mentioned.....lol

good # enjoy your new found power

[cjriojas]

I agree with quik, throw the maf away and get a speed density tune. If you plan on the turbo, why waste the money finding a bigger maf? Turbos require an SD tune. SD tunes on non turbo/sc vehicles is an option that some prefer due to possible restrictions by the maf.