Can't get the turbos to light in a cummins

[gmduramax]

So it's an 07 6.7 cummins. It had 120hp industrial injectors (so who knows how big they really were). Dual CP3's. 2400 pulse tune. 66/80mm twins. The truck ran great but was losing a little rail pressure. So it got dual 12mm exergy CP3's and some huge 48LPM injectors. (I was told these injectors are bigger than what's in the bullydog pull truck).

Problem is now the turbos won't light. Only builds 30lbs of boost and smokes. This is on a 2100 pulse tune. Are the injectors really that big and putting out the flame? The EGT's will go past 1600* so they're getting heat. The turbos checked out fine and zero boost leaks. Anybody have any ideas? Smaller tune?

Edit the truck holds perfect rail pressure

 

[CaptPhil]

I am assuming the tune was updated. Those are giant injectors.

Are the twins gated? I would think that if they made it to 30lbs that going past that wouldn't be an issue.

 

[gmduramax]

The 66 is gated

 

[NAFLASH]

What exhaust manifold do you have? Whose tuning it?

 

[Bustedknuckles]

The 66 is gated

Gate stuck open? Rag in the intake manifold after doing the injector swap?

 

[gmduramax]

What exhaust manifold do you have? Whose tuning it?

Not sure on the exhaust manifold. Zack at starlite

Gate stuck open? Rag in the intake manifold after doing the injector swap?

I didn't think about the gate. I'll check it out

 

[hondarider552]

Converter? My buddy here in AZ has 62LPM injectors, 66/88 twins, and a 3000 stall Goerend and can light faster than mine.

 

[clrussell]

Spray it

 

[NAFLASH]

Where are you located?

 

[gmduramax]

Converter? My buddy here in AZ has 62LPM injectors, 66/88 twins, and a 3000 stall Goerend and can light faster than mine.

It's a manual.

Spray it

It will be getting some

Where are you located?

Nor-cal

 

[DIESELMAFIAPER.LB7]

Who's tuning?

 

[gmduramax]

Zack at starlite diesel

 

[hondarider552]

Manual wtf is he a trucker or something?

 

[duratothemax]

Manual wtf is he a trucker or something?

He wants to go big-wheeling urrrvrywhere in his cummings! :woott:

 

[DIESELMAFIAPER.LB7]

Everyone around here wants a standard nothing new. D say go smaller injectors I'm sure they are those stupid ass cobra injectors that are 400% over

 

[weazel]

Or try these guys: www.altereddieselwurks.com

 

[zf>allison]

Manual wtf is he a trucker or something?

How do u put a quote in your sig. Cuz this is awsome

 

[Xternal]

Brian always bashing on the manual crowd.... damn haters haha

 

[dirty_max]

aint nothing wrong with a good ol handshaker :driving:

 

[zf>allison]

aint nothing wrong with a good ol handshaker :driving:

He'll no I still have the stock tcm tune...