1LE Hugger Orange

Hi ,
I have a set of Kooks headers and y-pipes with cats , do I have to get the PCM programed ?

lemons12

iTrader: (71)

To get every last bit out, yes.

Will it harm anything if you don't, no.

ds98formula

iTrader: (3)

Do you need it no. Will it help with power and drivability yes. I would get all your bolt ons then get a tune.

2000PewterT/A

After your done with all your bolt ons then get a tune.

xxrillixx

iTrader: (118)

Since you are not removing the rear O2's, no. As long as you are not taking off AIR or EGR you will be fine.

KOOKS Headers

Lemons12 is correct. We always recommend getting a tune to get the most out of your headers, but it is not always required. Let me know if I can help with anything else.

1LE Hugger Orange

I have installed a Spohn torque arm and have an adjustable panard bar and rear lower control arms on order, I will have them installed as well as the headers and y-pipe and wait untill the end of driving season in Manitoba , Canada to install the LG G5X3 cam and Comp valve spring kit as well as a Spec aluminum flywheel and clutch kit before I get a tune .

1LE Hugger Orange

I was told the weak link is my rear end , a Torsen Gleason 3:73 ratio , it is a 10 bolt , if I do not do 3000 dumps with sticky tires I should be OK , but if I get stupid and blow it up , not to bother to fix it and put in a 12 bolt . What is recomended ?

lemons12

iTrader: (71)

It could go with street tires from a 30 roll or it might last 30 passes with DRs..

Take it easy and don't do any hard DR launches... If it goes and you have the coin to upgrade then go with a 9"... If not get a used stock rear for 300$ or so and take it easy on that one.

1LE Hugger Orange

I put on a set of 17 " American Racing torque thrust M's , black spokes with a polished rim , for tires 245/45 and 275/40 BFG , I do not do drops in 1st but let the car get rolling and do not hammer first , I get on it in second and shift at about 4 grand about 50 mph , I live in the country and most of my driving is on the highway . The car is being built more as a road race car as opposed to a drag car .

1LE Hugger Orange

Very nice headers and y-pipe w/cats , I am a machinist with 32 years in aerospace , the car has a SLP muffler , what does Kooks have ? that is not too loud but still has a bit of a rumble . Working evening shift , I do not want to be a "heat score " going home .

1LE Hugger Orange

The engine has Castrol conventional oil in it , but I am due for an oil change and want to switch to Mobile 1 , synthetic , what weight should I run in a 2001 , LS1 and how does Mobile 1 synthetic oil filters rate ?

lemons12

iTrader: (71)

VR-1 Conventional.. I run 20-50 but I have different tolerances than you since I have a 408 and a 370. Something around a 10-30 would be fine.

Ac Delco/Wix/Napa Gold/K & N for the filter..

1LE Hugger Orange

The car was lowered about 1.5 inches , any ideas how to likt the back up a 1/2 to 3/4 inch ?

lemons12

iTrader: (71)

What springs?

1LE Hugger Orange

Old school you could stroke a 350 to 383 , can you do that with a SL1 , with the tune ?

lemons12

iTrader: (71)

Yes... With machining, crank, pistons, and rods.

How would a tune turn a 346 CI Ls1 into a 383? Or any motor for that matter change CI.

1LE Hugger Orange

No idea

1LE Hugger Orange

After you do the engine stuff , then you have to do a tune .

1LE Hugger Orange

I have a set of 1LE springs .