so I installed the 440cc injectors last night and removed SSV intake, replaced with stock and AAM spacer.....


Started car up this morning had a rough start and idle all over the place lol after 2 mins it was a little shaky idle, ran it around the block... and at 3k rpms i guess the intake blew off the coupler thing, took it home screwed it back on, and it rides fine other then at around 3-3.5k rpms it sounds like a fluttering sound, or shaking sound, could be "detonating" something like a knock but not, higher the rpm goes a little louder it gets...

So is this because it's not tuned? or air leak?

BTW i was dyno tuned with my previous setup and stock injectors, so im assuming all i need it a tune?

Also as far as spacers for the fuel rails go i heard/read about that.... I didnt have any "aftermarket" ones just little black ones that i believe are stock and i was able to get the rails down tight and the injectors dont move. any opinons? btw dyno tune this friday...


1) The stock OEM Crank pulley was chipped in the center/cracked where the key goes... and 4 deep grooves on the ribs..... why and how could this have happend? was it an install problem maybe>>>>>

 

Need more info. What other mods do you have that you need 440 injectors? Are you boosted? Don't drive or rev the car until you know what is going on.

 

Vortech supercharger with 2.87 pulley, cams, custom dual exhaust, 1 step colder plugs

 

Sounds like your not sure if you got the injectors installed right . It could be that , or it could be and sounds like a vacuum leak

 

Get it on a Dyno, then you'll figure it out.