When I pull anything over 7000lbs it gets really hard to keep the egt's under 1250 in 4th gear, and in 5th just feathering the throttle i can bury the pyro with little effort. Now my question is, is this normal behavior for the mods in my sig or is it time for a bigger turbo?

 

Pretty normall...you're lucky you're only pushing 1250 with that setup.

what kind of injectors?

 

I'm not sure who made the injectors but the guy I bought the truck from said they were 75hp. I wasn't sure if i had a boost leak or not,the most it will make is 21psi with or without a load.

 

Boost sounds low, check for leaks. How's the air filter?

 

I just installed a bhaf and replaced the slinky part with an aluminum tube last week. I did look a little while ago and found a boot that has a scape mark but doesn't look punctured. Where would be a good place to find a cheap replacement boot?

 

www.siliconeintakes.com or www.frozenboost.com

they're the same place, really. they're reasonably priced and have very good quality pieces IMO!

 

Well i'll start by replacing the boot and go from there. thanks for the help everyone.

 

g1625s open can of worms....slap a 12cm on there

 

That's planned for this weekend along with a 2nd gen cast elbow and 4" down pipe.

 

i think there are clearance issues with the cast elbow...

 

not with the cast elbow but with the downpipe itself. it'll hit the firewall near the bottom. but i would think with a little modification to it, it would clear it enough. or you can take a small sledgehammer to your firewall

i'd also like to make the 2nd gen downpipe and cast elbow fit on mine for when i get this super 40/35 with a 14cm on mine.

 

Y not just eliminate the cast elbow, like mine. I'll look for a picture...

 

The cast elbow and 2nd gen DP will fit. Atleast if you buy one from these guys:

http://www.dieselperformancesystem.com/

It was a little tight at the firewall, but had atleast 1/2" clearance. That was with the 12cmWG. If you have the "short" 16cm you will have plently of room.

I used to have that setup when I ran the H1C.

 

Would you say an hx-35 with a 14cm WG housing would still yield about 1/2" clearance from the firewall? I just bought a super 40/35 and would like to run the elbow and 2nd gen downpipe. Mainly because I can find used ones for cheap rather than paying $200+ for a downpipe from source or stans. I wouldn't mind the source or stans downpipe but would only buy it if I absolutely have to.

 

I would think so. I thought I had a pic of it installed, but can't seem to find it now. The HVAC blanket thing was what it was getting close to. I'm sure it was sagging a little, the upper inside screw is torn out like most 1st gen's I have run accross.

That is the main reason I went that way, cheaper and easier to come by DP's.