Express van mods?

rocky ward · 02-01-2009, 07:19 PM

I have 06 Express van with duramax and wanting to do some mods. Anyone have any idle to get alittle more horsepower? what is the most popular product

exhaust
programmer
egr plate exc

**duramaxbd03** · 02-01-2009, 07:21 PM

do they even have mods for them?
and wouldnt the tranny blow out pretty easy in them

Tacticalhummer · 02-01-2009, 07:56 PM

I think on the vans they come with a 4L80E which does hold good power but not like an Ally. Also I think the Dmax on the vans come with different programming (less power) than that of a pick up.

rocky ward · 02-01-2009, 08:53 PM

what about doing way with muffler & cat straight pipe should help alittle? I use it to pull a 20' enclose trailer with race bike. Ive used duallys for a few years now but the van is alot more room

ShopSpecialties · 06-09-2009, 10:09 PM

4" turbo back from a truck and EFILive.

**gr8shot** · 06-09-2009, 10:21 PM

You can add a little power, but don't add much. The 4L80E is a strong transmission, but it's no match for a dmax. The torque is what will kill it. If I remember tomorrow I'll try and find where I saw the limits of the 80E. I saw it somewhere, cuz a guy built up his van and smoked his 80E.

ShopSpecialties · 06-09-2009, 10:25 PM

I have been running a 50 horse tune and the exhaust for over 50,000 miles with zero problems. The number 1 issue with the vans being derated is engine overheating.

**gr8shot** · 06-09-2009, 10:50 PM

um... I'd say the number one issue is blowing up the tranny! why would a derated engine overheat? Less power = less heat, or did I miss something when I took thermodynamics?

**Hondarider552** · 06-09-2009, 10:53 PM

Quote:

Originally Posted by ShopSpecialties

I have been running a 50 horse tune and the exhaust for over 50,000 miles with zero problems. The number 1 issue with the vans being derated is engine overheating.

Nope, the 4l80e cannot take 650 lb tq minimum. Mike L told me awhile ao it can only take 460 or so.
egr plate will be easy to do and diamond eye downpipe since its right behind the doghouse.

**gr8shot** · 06-09-2009, 11:03 PM

Quote:

Originally Posted by Hondarider552

Nope, the 4l80e cannot take 650 lb tq minimum. Mike L told me awhile ao it can only take 460 or so.
egr plate will be easy to do and diamond eye downpipe since its right behind the doghouse.

Yeah that thread on DD was the one I was thinking of, talking about how much power the 4L80E can (can't) take.