i work with a know it all, and its getting a bit annoying. anyways we were talking about my E99 truck, and he thinks that the turbo back exhaust (4" downpipe, 4" straightpipe to 5" stacks) and diy intake (full 4" mandrel bent tubing and donaldson filter) should add about 60 hp and 120 torque. i think he is not only wrong but a complete moron. i was thinking more along the lines of 25-35hp and 50-75 torque.. am i right or is he or are we both way off?

any help is appreciated.

 

My guess is less than both of you figure...

A chip will get you roughly 60-80hp... Exhaust and intake are just supporting mods and might bring a little but not much...

 

really? no real power gains huh? I'm not trying to be a dick, i'm trying to figure this out correctly. Removing all air and exhaust restrictions wont gain anything?

I know this is not the same but i gained 23 rwhp on my former Chrysler 300c with the 5.7Hemi with an Airhammer Intake, and a full 3" headers back exhaust (yes it was dyno'd before and after). So on a diesel allowing it to breath won't gain me at least that?

*EDIT* I forgot to mention it was running Diablosport Predator tunes before and after the mods

and yes a TS chip is coming for it... I understand I will reap more of a benefit then...

 

You will gain some power with those mods. Your numbers are more realistic.

Luke

 

I know you said mine are a little more realistic, but do you think I can achieve those numbers, untuned??

 

If you saw 20 I would be surprised, think of it this way, how much more power do you notice when you change a dirty air filter, not alot, going to an easier breathing filter only gains you a little and the exhaust is the same, I would say 10 from both.

 

maybe 15-20 hp? not a huge gain, you'll see alot more if you don't have it, chip it, then do it, thats when you can tell the biggest change that i've noticed

 

wow that is actually kinda depressing

 

ok another stupid question that goes along with that. i am thinking of buying a ts chip and was looking at these setting:

High Idle 1200 rpm
smoke
65hp moderate tow
65hp daily
80hp performance
100hp performance

how close to these numbers will I actually achieve?

 

~80hp give or take...

Some get more, Depends on who is doing the tuning...