Question about lingenfelter 630hp kit

[JBZL1]

So these are the mods included in the 630 hp kit-

Package Includes:
- 2.55 inch diameter steel supercharger drive pulley - powder coated black - 8 rib
- 8 rib serpentine belt
- Lingenfelter LS9 solid supercharger isolator coupling
- Port and polish supercharger snout
- Lingenfelter high flow air intake kit
- 160 degree thermostat
- Increased boost level 10 - 12 psi or 3 - 4 psi over stock
- Professional engine modifications, testing & PCM tuning
- Chassis dyno report before & after installation
- Excellent drivability, highway mileage not adversely affected
- Lingenfelter certificate of authenticity
- Lingenfelter 1 year/ 12,000 mile warranty on added components

Mods I have
-2.85"
-ported SC inlet
-160 tstat
-rotofab intake
-rotofab ic reservoir
-SLP headers

My question is why doesn't the 630 kit come with injectors? I plan on going 2.55" and custom tune and am wondering if I will need injectors or am I borderline? I only will have the upper pulley, should I go with colder plugs as well?

Thanks guys !

[Can'tHave2MuchHP]

It has been done, that is, having a 2.55 on stock injectors but it is a very bad idea in my and many many others' opinion. Definitely get injectors for your car if you are going to 18% OD or more.

[JBZL1]

So why doesn't the 630hp lingenfelter kit come with injectors? Is 2.55" that close to maxing out but LPE just gambles on it?

[STUNNAH]

Originally Posted by JBZL1

So why doesn't the 630hp lingenfelter kit come with injectors? Is 2.55" that close to maxing out but LPE just gambles on it?

I have this kit on my car the only exception is I don't have header's...Stock injectors work fine with this kit, the headers should not make a difference...My car reacts better with this kit than it did stock in all performance aspects...Use the colder plug as well...

[JBZL1]

Thanks ! I have done some research on here and CTSV forums and it seems like lots of people are on stock injectors with no issues. What plugs should I go with ?

[STUNNAH]

My kit came with NKG TR6 plugs and I have not had a single problem out of the kit...