[JSH]

Originally Posted by race24x

I see a lot of back and forth. I was considering doing the Big Gulp, Kong X porting, 103TB and a 2.3 pulley. I have stock exhaust manifolds cats, but a free flowing muffler forget the brand but the mufflers are almost non existent LOL. Should I consider not doing the pulley? I see some didnt some did... Also I saw a post that included a Spark Plug change. Is this something that is helpful or better? How often should you change these plugs? Do you have to index them? Sorry went from a supercharged SS to the ZL1 and want to Mod some.

You should start a new thread with these questions as they are far away from the basic topic here.

[Z OH 6]

Originally Posted by CamOnlyJabroni

If that actually happened I would believe it to be more of a chemical breakdown from the car running meth than anything IMO. I was messaging Greg Kong back and forth this morning about the X-Port and he thought for what I was doing with the car should help power wise of course and also help move the efficiency later in the power curve.

Agreed, the X-port should net a bit more power and will absolutely shift the power curve upwards if that's something you desire. Some prefer the stronger initial hit down low with the standard port.

[Sillysspeed]

Originally Posted by Z OH 6

Agreed, the X-port should net a bit more power and will absolutely shift the power curve upwards if that's something you desire. Some prefer the stronger initial hit down low with the standard port.

Moves the power curve up but the cars with basic bolt ons and kong X are still 60 footing hard.

[Z OH 6]

Originally Posted by Sillysspeed

Moves the power curve up but the cars with basic bolt ons and kong X are still 60 footing hard.

I'm sure if you launch at a slightly higher rpm. Where the standard vs X-port may differ more is drivability when you're not at full throttle like casual driving or depending on where you want your power curve if you're into road racing.

[JasonD]

Originally Posted by race24x

I see a lot of back and forth. I was considering doing the Big Gulp, Kong X porting, 103TB and a 2.3 pulley. I have stock exhaust manifolds cats, but a free flowing muffler forget the brand but the mufflers are almost non existent LOL. Should I consider not doing the pulley? I see some didnt some did... Also I saw a post that included a Spark Plug change. Is this something that is helpful or better? How often should you change these plugs? Do you have to index them? Sorry went from a supercharged SS to the ZL1 and want to Mod some.

If you have access to e85, I’d stay stock pulley and tune for an ethanol blend. My car is significantly faster running 50% ethanol and stock pulleys, vs 2.3” pulley and 93 octane.

[Akura]

Thank you all.

[CW3SF]

Originally Posted by JasonD

If you have access to e85, I’d stay stock pulley and tune for an ethanol blend. My car is significantly faster running 50% ethanol and stock pulleys, vs 2.3” pulley and 93 octane.

Concur. This is a winning formula IMO. Very little (if any) added heat with the stock pulleys and X porting. With additional fueling upgrades the car is an animal.

[race24x]

Originally Posted by JasonD

If you have access to e85, I’d stay stock pulley and tune for an ethanol blend. My car is significantly faster running 50% ethanol and stock pulleys, vs 2.3” pulley and 93 octane.

Thank you. Unfortunately I can only buy it by the 5 gal can or 55 gallon drum and it is very expensive. I was running E65 in my 14 SS and it made 648 with the added supercharger etc. One good thing is Maine is a colder climate state so we dont see a lot of 90 degree weather. Hopefully that can help with my IATs.
What do you think about the spark plugs? Is it worth the upgrade and how often should you change them? Do you have to index?

[JasonD]

Originally Posted by race24x

Thank you. Unfortunately I can only buy it by the 5 gal can or 55 gallon drum and it is very expensive. I was running E65 in my 14 SS and it made 648 with the added supercharger etc. One good thing is Maine is a colder climate state so we dont see a lot of 90 degree weather. Hopefully that can help with my IATs.
What do you think about the spark plugs? Is it worth the upgrade and how often should you change them? Do you have to index?

I used NGK LTR71X-11 plugs. They were recommended when running a little more boost. Not sure on their lifespan? I’ve never heard anyone mention a need to index.

[Marozl1LE]

Can anybody tell me which is the right boost channel or layout for the boost pressure on the hp tuners vcm scanner
I have two different in one for the channel they are read the boost too high.

Thanks for your help ��

[Megahurtz]

Originally Posted by Marozl1LE

Can anybody tell me which is the right boost channel or layout for the boost pressure on the hp tuners vcm scanner
I have two different in one for the channel they are read the boost too high.

Thanks for your help ��

You have to create a user math to see the proper value.

-Add Manifold Pressure - Hi Res (the proper MAP channel to see accurate MAP)
-Add Barometric Pressure

Create a math that takes Manifold Pressure Hi res, minus Baro and then covert the value to PSI.