What HP should I make???

Duradan · Jun 26, 2011

Alright, so I know what HP I made with these mods... But it seems low to me... Ill list everything off and what do YOU think I should be making power wise?

--Intake
--MBRP Exhaust
--Ts 6 pos Chip
--Swamps 175/146 injectors (ran 230 hybrids for the dyno with same tunes as smaller injectors)
--H2E turbo kit w/out I/C
--Fass Fuel
--Sinister Regulated Fuel Return Kit
--Adrenaline HPOP
--Built tranny (Billet TC)

And that is it I believe...

Rmartin-97 · Jun 26, 2011

445 hp

davey99ps · Jun 26, 2011

450ish

Duradan · Jun 26, 2011

I made 369HP with the hybrids in... glad im not the only one who thinks that number is low... what could be wrong for me to lose this much power? (made 55 lbs of boost with the hybrids in) 35 lbs with the 175's in... surprised I dont make more power...

cw96stroker · Jun 26, 2011

Are your injectors tuned down to keep egts down a lil due to not having an intercooler?

Gearhead · Jun 26, 2011

Is your turbo healthy? Holding HPOP pressure?

Duradan · Jun 26, 2011

like i said, the hybrids were just thrown in for one weekend, no tunes changed for them, used the tunes I had for the 175's...

Im just curious why even with the 175's I dont make good power... turbo has been on for like 6 months and is healthy, hpop is pretty much brand new (3 months)... havent checked it pressure wise though, got good fuel pressure... im thinkin there is a tuning issue

Bobby@cp · Jun 26, 2011

So you were running bigger injectors but with tunes for smaller injectors????

My guess is that since the chip was only calling for 175ccs of fuel thats all ya got even tho you ran bigger injectors. I'm sure someone will correct me.

Duradan · Jun 27, 2011

Countryboyrob said:
So you were running bigger injectors but with tunes for smaller injectors????

My guess is that since the chip was only calling for 175ccs of fuel thats all ya got even tho you ran bigger injectors. I'm sure someone will correct me.

Ya, but even with the 175's shouldnt I make over 369hp?

Whytry · Jun 27, 2011

I would say that the tune might have messed with the numbers you were hoping for.

Duradan · Jun 27, 2011

Whytry said:
I would say that the tune might have messed with the numbers you were hoping for.

With the 175 set up the truck ran about a 14.4... (35 lbs)
With the hybrids the truck ran a 14.1.. (55lbs)
Dyno'ed w/hybrids at 369 HP
Never dyno'ed with 175's but im sure it will be a lower number considering the quarter mile ET Difference

davey99ps · Jun 27, 2011

Duradan said:
Ya, but even with the 175's shouldnt I make over 369hp?

With the 175's I would say around 400. Your numbers definitely seem low to me. Are you sure you don't have any boost leaks? Could something have been wrong with the dyno?

Duradan · Jun 27, 2011

davey99ps said:
With the 175's I would say around 400. Your numbers definitely seem low to me. Are you sure you don't have any boost leaks? Could something have been wrong with the dyno?

dyno was fine, everyone else dyno'ed around there expected amount... My motor is out of the truck right now, did studs to it, and I found a few minor exhaust leaks, but I doubt enough to make 30-60 hp loss... well see though when I get the motor back in...

davey99ps · Jun 27, 2011

Duradan said:
With the 175 set up the truck ran about a 14.4... (35 lbs)
With the hybrids the truck ran a 14.1.. (55lbs)
Dyno'ed w/hybrids at 369 HP
Never dyno'ed with 175's but im sure it will be a lower number considering the quarter mile ET Difference

I have a cc/lb obs also, mine weighs 7000 with me in it. I put 7200 in to the HP calculator just to keep it conservative, an used your 14.1, an it said 421hp at the wheels which seems a lot closer to where you should be

97powerstroke · Jun 27, 2011

What kinda fuel pressure do you have? I have heard fass pumps aren't a good choice for powerstrokes cause they don't make enough pressure but are more for flow to feed an Injector pump on the Chevys and dodges

Duradan · Jun 27, 2011

97powerstroke said:
What kinda fuel pressure do you have? I have heard fass pumps aren't a good choice for powerstrokes cause they don't make enough pressure but are more for flow to feed an Injector pump on the Chevys and dodges

I believe were running 70 psi right now... and my truck weighs 6980lbs w/me in it

kampy · Jun 27, 2011

I'd think 400 would be tops for the 175/146, after all, they're just stock nozzles and you can only get so much fuel through them in so much pulsewidth. 350 would realistically be more like it depending on whos tunes you run.
Edit: I think Swamps only advertises their 175/30's for about 385hp on a SD