Opinions on downpipes??

I just got off the phone with MPT. Was told NOT to change the downpipes, as it won’t really make a difference aside from sound, and that it WILL more than likely cause a code to be thrown.....

Opinions???

leave the stockers unless you go with spd.

Ive tried ( and destroyed) most others. the SPD pipes hold up to baja. The others failed miserably.

SPD is also working on a new high clearance version that will tuck under foutz skids without any interference ( with some neat tricks to make it happen) . I've been providing them feedback and measurements to make it happen and have been wear-testing their current offering.

+1 for leaving the stockers.

Our cats actually flow pretty damn good. You should only consider aftermarket cats or no cats if bumping up to bigger turbos.

Tune + dps. Is the way to go.

@Nood1es - what kind of dps, and will it cause a code???

Please don't quote on this but I have received the same information form MPT and to be honest I was not convinced, but all the trucks with a Dp and a tunes seems to pull better than the ones with only tune going uphill a sand dune even on road I witnessed 2 trucks racing one of them was running an AFE intake + MPT tune and SPD Dp and adapters and the other one was stock with a tune only and the truck with the bolt ones seems to pull a 2 cars ahead.

@Rednose - I totally co-sign that. Makes complete sense to me also. I’m just wondering if the DP’s will cause a code and lingering check-engine light....??

no codes with the spd downpipes. Had codes with the others and had to run o2 sensor extensions.

@zombiekiller - catted? Non-catted?

BarryG said:

@zombiekiller - catted? Non-catted?

Click to expand...

catted