New LS1 Owners - Newbie Tech - cutout open or close?

going to the track tonight to see what the car will do with the longtubes and offroad y pipe.car has a borla catback with a cutout.

Open!!!

both,do one run with cutout open,one with it closed :D

If you have the adjustable Borla,isn't it basically a cutout already when using the wide open plate?Or actually no plate?

Maybe there would be a difference between the closed borla and an open cutout?

i dont think i have the adjustable one

i dont think i have the adjustable one

Aaahhh ok...Good luck at the track man!

Get yourself a baseline run with it closed, and try to duplicate that run with the cutout open and see if you pick up any ET or mph.

Get yourself a baseline run with it closed, and try to duplicate that run with the cutout open and see if you pick up any ET or mph.

:D..:devil:

What did you end up running? I bet you would have a better 60ft with it closed but a lower trap speed, but in the end I bet having it open would give you better results. I always just run mine open. Just experiment with it.

probably run the same time if not alitle more slower just more noise with the cutout open

probably run the same time if not alitle more slower just more noise with the cutout open

SLOWER.......:jest: NOT LIKELY...................:engarde: Probably 3-4 tenths FASTER.

both,do one run with cutout open,one with it closed :D

That's what I'd do for my own little bit of knowledge

SLOWER.......:jest: NOT LIKELY...................:engarde: Probably 3-4 tenths FASTER.

Maybe 1-2... 3-4 seems a bit excessive

1-2 seems a bit excessive :jest:

^^^

I'm there, if he got a solid 1/10 I'd be happy.

Re'

forget cut-outs jus get a 3in ORX they flow and u still keep back pressure so u dont lose torque

haven't ran the car yet,track was closed last week.might go tomorrow i'll let ya'll know the results.before exhaust car did 13.6 @104 spinning the tires in second.hopefully i can learn how to launch the car for better 60ft times.

best u can look at on street tire is a 2.1 60 ft

I also say run a few passes with them closed and then a few open to see just how much you gain.
you will be faster with them open. :burn:

best u can look at on street tire is a 2.1 60 ft

that sounds about right my 13.6 pass was 2.25

I've personally seen a difference with the cutout open at the dyno. Open cutout on 2nd pull gave it 8hp more compared to it closed on 1st pull so it definitely helps.

I have stock exhaust and gained 2 MPH in the 1/4 mile with the cut out open.

no change in the time

I gained .1 and a mph and I have true duals. So they must be worth something.

well ran the car tonight but was only able to do one pass,so i ran the car with the cutout closed and the car ran 13.2 @109 with a 2.2 60ft so I might be a able to do a lilttle better.next time i'll try it open and have my slp lid.

need to do a back to back run

I've personally seen a difference with the cutout open at the dyno. Open cutout on 2nd pull gave it 8hp more compared to it closed on 1st pull so it definitely helps.
What kind of catback did the car have? I have a hooker catback and an open cutout only gave me 2 more horsepower.