I suppose I just have to guess then?

And when you say "upgrade", are you referring specifically to a better pump?...or what? Because I see all sorts of things on the market between different pumps, return line kits, etc. Where would you suggest I start?

mikel wrote:sounds like you may need a fuel pump rewire or upgrade...

Are you thinking that my current (stock/original) fuel system can't keep up with the demands of higher boost?

all the stock vacuum lines in place?

I'm at least quite certain they are. I recently bought this car from it's 60 year old original owner who took it to the dealership for EVERYTHING. (including oil changes) He was a major advocate for keeping the car as original spec as possible. All my local ...

I've got a genuinely stock 2004 SRT-4, except for a drop-in K&N air filter. When I installed the canned "93 Octane" tune with my DSP, my WOT AFR's went from the factory readings of 11.50's to a range of 12.80's to 13.20's. I first tried to fatten up the fuel percentage which seemed to help a little ...

Hey there!

I modified the parameters on my Diablosport Predator's "93 Octane" tune and want to save it off on to my computer for future reference. I thought I saved it onto my computer, but the .drg file is only 5kb, as compared when I did this with my factory backup tune which was 65kb.

Did I do ...