Katech L83 Throttle Body

[Black and Blue Z71]

Hey guys, I was wondering if anyone has any input on the Katech L83 ported throttle body. https://store.katechengines.com/mobile/l83-cnc-ported-throttle-body-p683.aspx

 

Is tuning required? I know about the L86 intake/throttle body swap but was curious about this.

 

Thanks 

[flyingfool]

i think your money is better spent on HPtuners , get the pro version.  this is cart before the horse IMO, what other parts have you installed... ???

 

 

[Black and Blue Z71]

Currently, Airaid Jr and exhaust. Looking at tune (Black Bear or Diablew) and possibly this. It's tax return season!

[flyingfool]

DO the black bear tune, then 6.2 manifold  then a 6.2 throttle body

[Lsgun1]

Wouldn't even waste the money on a throttle body. You are not going to surpass what the factory one can flow with the mods you have and are planning.

[Black and Blue Z71]

This is good info guys. I appreciate it

[flyingfool]

i would begin with the 180 t-stat from Katec, then remove the transmission t-stat,. 

after this you can tweak the PE table on the motor, and reprogram the trans for less Torque managment, and improved shifts, you dont want to add power to the factory tranny. 

 

[CamGTP]

Why?

 

6L80e's and 8L90e's can hold up to more than stock power levels. People have been modding these trucks for years now and if it was truly a problem, people wouldn't be doing it without spending 4-5K for a built up transmission first.

 

Having stuff work is all in the calibration. The airflow model and torque model need to done very well so things work as they should. I'll say this too, torque mngt is what keeps the transmissions alive, pretty much none of it has to be removed on the transmission side to function correctly.

[Black and Blue Z71]

Sounds like a solid tune is where I should start then 

[Darksky]

Tune, then see if you’ve got “the bug” to keep adding power. But, the tune is first.

[flyingfool]

11 hours ago, CamGTP said:

Why?

 

6L80e's and 8L90e's can hold up to more than stock power levels. People have been modding these trucks for years now and if it was truly a problem, people wouldn't be doing it without spending 4-5K for a built up transmission first.

 

Having stuff work is all in the calibration. The airflow model and torque model need to done very well so things work as they should. I'll say this too, torque mngt is what keeps the transmissions alive, pretty much none of it has to be removed on the transmission side to function correctly.

Your right TM does protect the trans,  i never said get rid of it just detune it,, if you datalog a stock trans the TM pulls timing even in gear and not just durring transition shifts.  

#1 mod is protect the trans from overheating due to the factory set up

[TJay74]

Man some of the info in this thread makes me want to bang my head.

 

Stock or not, the ported TB is a solid 5-10 rwhp gain over the stock one, combine it with a ported OEM intake manifold and you are looking at a solid 10-20 rwhp gain on most of the LTx series engines.

CAI intake, ported IM/TB, deleted secondary cats, E85 conversion and a tune are a solid 40hp gain on these engines. Then add in some transmission calibration changes and you can make a night and day difference in how these trucks run.

[Black and Blue Z71]

Deleted secondary cats? I'm assuming you're referring to the third cat on these trucks ?

[flyingfool]

.....

 

[TJay74]

On 2/20/2020 at 12:37 PM, Black and Blue Z71 said:

Deleted secondary cats? I'm assuming you're referring to the third cat on these trucks ?

 

There is no "3rd" cat on the trucks. You have 2 primary cats and 2 secondary cats. The primary are monitored by the ECM and the O2 sensors, the secondary cats are part of the 50 state CARB requirement. They can be removed with no issues or tuning needed.