Hey all

99rcsb. Has a lq9, with stage 2.5 243'a, 231/231 111lsa, full bolt ons, t56 trans and all the good stuff. Truck does have a racetronix module with a walbro 255 and a hot wire kit. Everything works wicked as it sits, and drives fine.

I want to add a little boost this winter. Ive asked before and some very knowledgable people said my setup should be fine as long as I keep the boost low,6-8 psi.

Im looking at a D-1sc upgrade, 60lbs injectors, 3 core intercooler, and not getting the inline pump or FMU as i believe it would just be a waste. Truck has supporting gauges in truck for monitoring already.

What else am I missing? What advice can any lend me on other items i should get at the same time?

thanks

 

I think the D-1sc would be overkill for the 6-8psi range... Save yourself some money and just pick up a P-1sc. I think it would work better for the kind of boost you're looking to make.

 

D is only 400$ upgrade, its not the $$$ that concerns me. Any other reasons why

 

I would definetly do the d-1 and keep it low boost.. your truck should make great power even out of boost then scream. Then later on if you decide to you can lower compression and up the boost.

 

thats exactly it man, Im not looking for big dyno numbers, I don't even track the truck. Just basically adding some more stuff to keep me interested lol. Looking at powdewrcoating as much of it as possible too(gonna makle a custom intake tube from Housing to filter box.

 

No other reasons, just the boost level.... But like Bumpers mentioned earlier, if you plan on running more boost in the future go with the D-1. Either wAy it should be a fun truck! I just drove a built/forged 2002 5.3L RCSB truck with a
P-1sc-1 procharger on it, running only 7psi, the other day! And man it was a blast!

 

for reference a P1sc can get it done, i make 540 on 12 psi or i make 500 on 12 psi with a lazy daily tune

LC9 5.3, trickflow 220s, 218/218 570/570 112 cam, 1 3/4 headers, 2.5" ORY into 4" exhaust
35x12x20s for wheels/tires
thru a 6l80 trans

 

You would certainly not be making a mistake going ahead and doing the d1sc. There are no cons......only pros. Sometimes I think procharger made the p1sc to set the hook, then sell the d1sc. I typically can't think of a time when the p1sc is a better idea than the d1sc.......low boost or not.

Sounds like it could be an awesome set up.

 

Thanks for the input everyone.

Can someone please explain to me about the 2 bar map etc? I want to run the big Red race valve, can i maintain MAF? Im quite confused on the whole ordeal...

thanks

 

Should be able to run the MAF with the big red valve, just make sure that your MAF is AFTER the valve. That way your not dumping metered air after the computer has already made adjustments for it.