Powemax and 155

Twan · Jul 6, 2012

Will I see a noticeable difference in my turbo spool up with a 155cc. It's nice at sea level, but at 5000-10,000 on hot days, it takes about 2-3 seconds to get moving when loaded.

jdgleason · Jul 6, 2012

Yes sir. The 155's will take a lot of that dead spot out of the low end.

TooMuch03 · Jul 6, 2012

FICm tuning should really help to get that thing spooling quicker too.

Twan · Jul 6, 2012

Got ficm tuning already, didn't help.

6.0 p-stroke · Jul 6, 2012

155s seemed to help spool my stock turbo a little faster, I noticed a difference when I ran a tune with less fuel on the bottom end. I loved my truck with that setup! It was a lot more fun to drive than it is now.

OCOutdoors · Jul 6, 2012

6.0 p-stroke said:
155s seemed to help spool my stock turbo a little faster, I noticed a difference when I ran a tune with less fuel on the bottom end. I loved my truck with that setup! It was a lot more fun to drive than it is now.

Care to elaborate more on this setup? Would 155cc with stock turbo raise EGT's?

6.0 p-stroke · Jul 6, 2012

I honestly don't remember what my egts were exactly. However in a tow tune I pulled my 30ft gooseneck with a race truck to Dallas and back and never saw over 1,000 degrees egt. It was quick spooling and had a slight haze at wot even in my insanity tune, which I ran almost all the time.

OCOutdoors · Jul 6, 2012

6.0 p-stroke said:
I honestly don't remember what my egts were exactly. However in a tow tune I pulled my 30ft gooseneck with a race truck to Dallas and back and never saw over 1,000 degrees egt. It was quick spooling and had a slight haze at wot even in my insanity tune, which I ran almost all the time.

That's interesting. I am debating whether I should do turbo or injectors first.

01PSD · Jul 6, 2012

Injectors first, you can always pull fuel if you have to. Very beneficial if the funds aren't there LOL

sly1types · Jul 6, 2012

double triple check that you dont have a crack in your up pipe. My spool up was getting longer and I had a cracked pipe now its spools really quick with my Powermax.

SouthFlstrokin' · Jul 6, 2012

How's a powermax with stock sticks?

05wh250 · Jul 6, 2012

Its a little slower than stock and has a definite dead spot around 50 if its in od.

Twan · Jul 6, 2012

The up pipes are good, it's not bad driven around, just when I get 20k behind it, it takes a bit to get it going.

SouthFlstrokin' · Jul 7, 2012

05wh250 said:
Its a little slower than stock and has a definite dead spot around 50 if its in od.

Really? My buddy just ordered a pmax for his stock 06.. uhoh.

Wayne · Jul 7, 2012

He should be OK for a while with some good custom tunes. Gotta have good tunes or it will be way worse than stock.

SouthFlstrokin' · Jul 7, 2012

Ahh I see... Hopefully he gets them tunes then.

Could have sworn I remember reading a pmax was a good upgrade for a stock truck ...

05wh250 · Jul 7, 2012

I've got tunes from innovative, it was better but still had a little lag, ficm tuning helps alot with it though.

ODAWG714 · Jul 7, 2012

SouthFlstrokin' said:
How's a powermax with stock sticks?

Stock spools faster on low but when the truck gets going the pmax pull harder mid n top. And it will lag with rpms being low. It needs to be fine tuned to make it fun to drive

flexyford · Jul 10, 2012

I have experience with stock injectors and a powermax with innovative tunes, and a powermax and 155's. I liked my setup when i ran 155's and a powermax. It took some time to get the tuning rite, but when it did, it had power all the way through. Like what was mentioned in other posts, with a pmax and stock injectors it seems there is dead spots, i noticed it especially when towing! Running a street tune compared to a tow tune seemed to help quite a bit though and it didnt get hot by no means. I never did try the tuned FICM though, but i do hear alot of people saying it helps alot! I say go with turbo first, get some good tunes written and then get a good set of 155's from Warrens or Casserly. Towing with that setup is awesome! Good luck!