HX35/40 vs. stock HX35 Turbo Lag.
 

I run my truck daily as a commuter vehicle, and I know that I need a bigger turbo to handle any setting above 3x3 on my Edge Comp. What I am most concerned about is lag time and smoke..... What are some thoughts about going to a HX35/40 turbo to get the better airflow and cooler EGT's, benefits, drawbacks, et cetera. I don't read much here about producing power with the Cummins without a lot of smoke....I would like a setup that I can run at somewhere around 350 hp without smoking out an intersection if I am not overly careful on the throttle.
Just so its clear....I have an 01 24 Valve 5 speed currently running an Edge Comp variable chip, K&N air intake, FASS, everything else stock. I like the results of running the Edge on 3x3, however if I could move enough air...I like the fuel economy of the 5x4 setting on the Edge. As it is, I treat the throttle like it is a raw egg, but the lag is great enough above the 3 setting that I blow too much black smoke. Not a problem on the highway, but in town, yuck.
Another thought, would a smarty be a better choice here? But back to the original can of worms, how to get more airflow and better spool time. Any thoughts would be great!:pca1:

If you have smoke induced lag now, it'll be worse with the hybrid.

With a 5 speed and the ability to run a lower sublevel, you should be able to drive smoke free.

I can drive with NO SMOKE on any level with a tight converter, tall gears and taller than stock rubber. A bigger turbo will always spool slower. You can try a turbo with a better housing like a 57mm S300 or go up to a 62mm. But in either case, it'll spool slower than what you have now.

Dave

That's kind of what I was afraid of. How about twins? There has got to be a way to run these suckers at a descent HP without blowing smoke all over the place!:madd:
What about running parallel turbos? I know it would be a real project to fab the exhaust manifolds, but I have the welding skills to do it--if it would work.
Thanks for the input Dave!

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Another thought here, what setting do you recommend running the sub level of the Edge at Dave when I run the main on 5? I do get my best fuel mileage at that level.

I'm thinking its time to check for boost leaks as well....

You should be able to hear boost leaks.. sounds like a WOOSH sounds when your at higher boost levels.. I have noticed that with a larger turbo it is a lot smokier in the lower RPMs, I did see something about running 2 HX35s, it was in a dieselpower magazine.
I put a AFE Blade runner on my truck, this did help with spool up and its a lot more areodynamic than the stock intake manifold..

a set of compounds would tow great and produce less smoke, but you will need more fuel for them. You could keep your stock turbo and add a bottom to the mix.

A HX35/ S400 set can be run on stock fueling. Don't ask how I know.

If you were going to compounds, do the hybrid. But, I would recommend a HX40 over a K31 or GT42-02 for a towing set and a S400 for a street/ strip set.

The towing set will spool fast with less fuel.

Dave

Dave, that sounds like what I am after! Also sounds very similar to what another diesel driver around here has done. Thanks!

No problemo.

Dave

i have a hybrid and i am fueling very heavily,and there is almost no lag at all.before i put it on i smoked bad,now it's hard to get it to smoke.it also cooled me down by about 300*with a 14cm housing(which is what most 35's are i think)spool is not an issue.the huge exaust housings are where you get the lag at.or also way too much fuel down low.