CrazyCobraSpeed

i just wanted to make sure i dont need to install the FMU if i am installing 42#ers... also if i have an intake fuel pump do i need the inline pump... should i just intall it for xtra protection or should i leave it off??

92hatchLX

I would reccomend installing the FMU as long as it has the disc in it for the 42 lb injectors, if it's got the disc for 24's it's going to try and push way too much fuel. Install the inline pump! Don't even drive the car with out either one of those things installed, it's just asking for trouble. You can ditch the FMU if/when you get your car tuned. Are you putting a 255lph in tank fuel pump in also?

CrazyCobraSpeed

in the directions for the fmu is only says stuff about the 19 and 24 pound injectors so i dont think its ogin to work with 42s.. as for the intake pump it is a 255lph walbro. so u think ditch the FMU and use the inline pump?

luckythirteen13

f*ck the fmu, just go get a dyno tune

PRO50SC

Agree. And put the additional pump on too. Then get your tune when your done installing everything.

CrazyCobraSpeed

what procharger seires do u ahve what boost are u running and finally what numbers do u have??

i have a tweecer and a AEM.... no offense but **** the dyno tune... the tuner around here isnt so great..... i do have a question for you tho.... if i remember rite you were running a good amount of boost on a stock bottom end... how much boost did u run at what mileage did u throw the s/c on and how long did it last... what shape was teh bottom end in b4 u put on the s/c

PRO50SC

p-1sc, 12#'s, 368/406 stock block heads and cam.

CrazyCobraSpeed

very nice.... the guy that owned this D-1 before me had a cobra intake like me with a custom cam he had victor joinors and i just have a very reworked gt-40 so thats the only big difference in the h/c/i setup he got 15 pounds of boost at 6000RPMs and made 543rwhp/578rwtq... i was just hoping for about 500rwhp/500rwtq so i think i will be satified im just slightly unsure it will hold... i know a lot of people have done it and its no big deal for the most part is just only that second guess... im running it to 6500RPMs but cobra's stock crank pulley is a little smaller than a GTs so i wont get quite as much boost as he did... the pulley size is very minimal tho... i was thinking after i got ever thing tuned in if i want the little xtra boost that id go to a salvage yard and get hte gt pulley for a few bucks.... ez pound or so of boost... probably only 15 bucks or so... if i have a safe tune it should be ok tho wouldnt u think??? i mean i know **** happens but its not pushing it to hard is it?? is on a cobra stock bottom end of course