Okay, time to upgrade injectors and throw on a box. I have the clutch thing already upgraded to a Con FE. I'm in the process of installing a pyro, boost, and FP gauge right now. I'm planning on picking up an Edge Comp box and am considering a set of EDM Mach 1.5 injectors. What do y'all think of this combo? Anything else that I would have to address right away (e.g. fuel system, pusher pump, etc) What can I expect power-wise from this combination on the stock turbo with a 4" exhaust.

 

I would do some sort of pusher pump or at least a max flow system. I could pull my fuel pressure to 5 psi with just a comp. From what I understand you would be a little hot with the stock turbo with that combo, but I could be done. Also since you have the Con Fe why not upgrade the turbo and go with some even bigger injectors. Oh hp should be somewhere around 400 I think.

 

This is going to be about the best overall street/towing combo you can get with the stock turbo. A Dodgezilla or PDR40 would be perfect in this power range as well.

For the most part, EGT will be safe with the box turned down and the truck used normally. If you plan on dragging 20K trailers up the Rockies on 5x5, you're going to melt something.

If you save the higher levels on the box just for intermittent playing and smoking ricers, the stock turbo should be fine.

If you actually NEED 5x5, then you're going to NEED a bigger turbo..

BTW-- a cheap EGT work around is a 16cm non-wg housing. You loose a little spool but gain top end kick and lower EGTs on top.


Justin

 

OH, and for fuel, just do the Wildcat Max-Flow fuel system. That's all you'll need, as the stock LP can easily handle a Comp and 1.5s.

By the way, the Comp and 1.5s is actually good for closer to 460 hp!! That should be enough

Justin

 

The Comp and 1.5s are likely a little warm for your stocker turbo, especially with the Comp in 5x5. You'll need to upgrade your fuel lines (forget a pusher or other pump. The stock lift is good to 400 HP). I'd also recommend an air system as the stock box is useless after 320 HP.

With a stock turbo, the Comp and 1.5s are good for around 360 - 380 HP. With a hybrid 40/35 turbo, you may get that number into the 400 mark.

Rod

 

I guess I should mention what I'm aiming for. I use this truck as a daily driver and it is used for heavy towing just about every weekend. So, I need to strike that balance between power, economy, and reliability/durability. I plan to have this truck a long time so these things are important to me. I don't plan to race it, the 6-spd. isn't quick through the gates as we all know. I'm just looking for that extra edge on the other two guys that think they make power. I want to have a smile ear-to-ear pulling 10K up a 6% grade in the passing lane while waving to the PSD or Duramax folks. Is that too much to ask for out of a stock turbo? Also would like to keep the cost down a little bit so an expensive turbo upgrade is probably not within my budget.

 

You can pull heavy with Mach 1.5s and the stocker turbo, but you'll definitely need to drop the Comp box down to level 1 or 2. And an air system will definitely be a must.

 

I ran RV275's with a Comp box w/ a stock HX35 for 7 months in a daily driver and towed another CTD to pulls on the weekends. I ran the truck on 5x5 during the week anf on 3x3 most of the time towing and didn't have any trouble, other than causing the early demise of a stock clutch. I was also running a BHAF and larger fuel line setup. The set up you are talking about should work pretty well.

 

Okay, so here's the plan then;

1) Set of Mach 1.5 injectors
2) Edge Comp
3) Wildcat MaxFlow system
4) Intake upgrade (either Scotty II of BHAF setup)

That's not too much of a bill to swallow given the potential payoff in power/torque. Did I leave anything else out?? Can I really expect to be in the 450 HP range (usable) with this combo? What would the potential torque output be at? Thanks for all the help.

 

With the RV275s and Edge Comp I dynoed 379Hp at Schieds in 2003.

 

There is NO chance of that combo delivering 450 usuable horsepower with a stock turbo. Mach 1.5s and a Comp box are good for 360-380 with the stocker turbo. While towing, the stock turbo is only good for around 330 - 350 usuable HP, depending on terrain, temperature, and weight being towed.

Ryan,

Can you tell me what your correction factor was? 379 is very high for RV275s and a Comp. I've seen literally dozens of Comp/275 dyno runs on a variety of dynos, and have never seen more than 353. If you've seen that number on a few dynos, hold onto that truck. It sounds like a good 'un

Rod

 

There was no correction factor that I know of, we typically don't need one in Indiana. I was also suprised by the number, I didn't expect to be over 340. I am also pleased with my current number of 505 rwhp when you take 235+160(Drag Comp)+120(Bully Dog 4s) you get 515 flywheel. I've basically had the same rwhp with a hybrid HX55 and the twins I'm currently running.
I know its not as simple as just adding all of the numbers together but it is a starting point.

 

Rod, my guesstimate of 450hp is based on the DD dyno graph for their DD2s and UFM. I guessed the 1.5s to be better than the DD2s. It does seem to be a bit of a reach for dd2s and a comp to give more than 420 or so....

Is the DD graph a little....optimistic?

http://www.dieseldynamics.com/popup/upm.htm

justin.

 

Well its done. I've got Mach 1.5's and a Comp on the way. Will give it a shot and hopefully it will meet my needs without running too hot (don't think I'll need to crank the box up too high to get a smile on my face anyhow). Thanks for all the good info. Will continue to absorb it like a sponge for a while.

 

oooo--- I'm jealous of the EDMs I WANT SOME!

But make mine Mach 3s

jlh