1995 12v Auto

DDP +50 sticks
#10 plate slid most of the way back to keep EGT's down
16.5 timing
3k GSK
boost elbow plugged, getting ~35 lbs ish
EGT's pulling up too 1200- 1250ish on a good hill under load with low RPM in OD lockout - not that I do this often just checking it out.

Its the truck in the sig, the tune is mild and very little smoke.

Reason I ask, and I thought I was good up to like 500hp, is a backyard mechanic friend is telling me to stick on a kit and suggests AFE.

He took the boot off my turbo on a clean backroad to show me the difference, and it does make a pretty signifigant difference with out the boot on, higher boost - lower egt and notable power increase.

Also, I notice the filter minder pulls pretty deep into the yellow even with a fresh (but stock) air filter.

 

Why not just run a BHAF? Cheap and good flow. You can fab up a heat shield yourself if its too close to the turbo.

Also, you may want to get a 4 inch exhaust to help with the egt's.

The intake hole on my stock box was probably about the same size as the turbo inlet, not great for pulling hard on it, like running up a hill trying to breathe thru a drinking straw!!

I mounted the filter minder on it and it hasn't budged in 5 years.

 

I put the AFE cold air kit on my 95 because the filter minder was always pulled down when I checked it. This was after the 4" MBRP cool duals were installed.I do see 36 lbs boost and 1100 pyro and do plan on a timing change soon.Last thing I did was to install ther big elbow to finish the air kit. My truck seems to make boost fast and works nice. I do want to get at the smoke screw and get rid of the some I get at low rpm`s.

 

Thanks for the replies.
I do have a 4 inch diamond eye exhaust with their flow through muffler.

I've thought about the BHAF, but meh, it seems over kill and noisy and less than clean looking.

seems I read quite a bit on here and other places the factory air filtration system is good up to X horsepower - and I'm below that.

anyone got links to studies or where is this info coming from?

 

this place here I've googled makes a stab at it
http://doghousediesel.com/id12.html

says does not increase hP, but then goes on to say improves performance, lowers egt, yadda yadda seems increased performance would increase HP throughout the RPM range.

also found this
http://www.dieselpowermag.com/tech/g...t_air_filters/

 

This is what I do> http://www.cumminsforum.com/forum/ge...ck-airbox.html

 

HP gain is probably negligible, but if you are saving energy pulling air in it is transferred somewhere else.

Example, 240 HP

If you take the fan off, you did not increase HP, Just had some to go elsewhere that was otherwise turning the fan, same as the energy required to draw in air, less there, more to something else but still sitting at 240 HP output.

My BHAF and homemade heatshield looks pretty sweet by the way!

 

Actually a freer flowing, colder air intake doesn't make hp, it makes more usable HP.
Without better airflow there will be hp you can't use because the egts get too high.