who's currently running ctsc on there auto's have some fuel pressure and related questions. thanks

 

For everyone else:
CTSC stands for COMPTECH SUPERCHARGER




And I've seen quite few with no issues, The included parts all are you need and should be a worry free installation..
Now if your doing it from scraps then you will need a WALBRO Fuel Pump upgrade for SURE.


Next time just use CT-S/C, CTSC will lead to some Cadillac forums XD

 

i allready have the ct-sc on the car and want to know what fuel pressure should be set to at idle and also shouldnt pressure go up as u make a pull? not real #'s but say its set at 50psi at idle and as u go into boost fuel pressure should go up correct? how high should it go?

 

mmm You got me, that's a really specific question there...


We need users with the S/C to chime in or if fatty knows the answer to that.

 

Are you running the stock dia pulley or the HBP? Do you have a aftermarket FPR? Are you testing with the vac line connected and with it off because you will get 2 different numbers (which you should test both ways)

most are around 36 at idle vac on and 65-69 idle vac pulled

 

The spec from Comptech is 35 - 40 PSI with 20 inHG vacuum and 65 - 70 PSI without vacuum.

 

^^ He da man!

 

running hbp 5.5 psi peak also using the ct fpr. we had it on the dyno the other day trying to adj a/f and no matter how high u raise the pressure it stays lean. i think the pump is going bad because fp is set at 46psi and as u start a 3rd gear pull it rises to 48 and immediatly drops to 38-40psi. shouldnt the pressure rise higher as u cont the pull?

 

problem solved pump was on its way out.