O/R X Pipe Gain??
 

So I just recently purchased a BBK O/R X Pipe (Catless) off a guy and we are going to install it this week. My question is, with the mods in my Sig, (Catback, CAI, tune and gears) Will the car be gaining some decent HP over stock midpipe? I have heard a small loss in low end torque, but I don't think that will be a problem with 4.10's! Oh and im also getting a 78mm throttle body plenum combo same week so it will help pull more air to help the exhaust make use of it.

From a stock mid pipe I would guess 15-20 hp.

Unless you go with headers as well. I don't think you'll see that much.

I think taking off 4 cats, you'd think there would be a pretty decent gain, I will be doing cams and longtubes in the future, but I was curious to the gain just as is.

You will feel a good difference in throttle responce, and how she pulls threw the rpms. I will add though, having at least two hi flow cats added in would be better in aiding in back pressure, and the loss in hp is soooo minimal.

So I will be actually losing some hp? Or will it be a loss of HP in the low RPM and gain in the high?

No, you will gain hp with this swap. :tup
What i was saying this that if you were to add in aftermarket cat's, you might loose a bit of hp, and i should've finished with that you would maybe gain a few more points in torque doing so cause of the back pressure with them added in.
Either way, you can't go wrong. :wink:

Awesome! Can't wait! Install this week! I'll do a before and after vid!

It will sound like it gained 50 hp lol

Oh WOW is all I can say lol! I think its the loudest car in like 100 kms of where I live lol. Just insanity loL!! Picked up some good top end, might have lost some low end tq, not sure but its untuned so it will only get better!

Haha hopefully the cops leave you alone.

That's where i was trying to tell you if it had hiflow cats, it would aid in that lost feeling in torque that you are feeling. Your engine needs some back pressure.
I have the Bassani catted x pipe, and before that i had the MAC off road h pipe (which had ....cough, cough.... dummy cats), and i felt the difference in the seat of the pants with torque between the two.

Nice sound though isn't it!! :tup. Just make sure you keep it on the low side being louder lol!!

Yea if I get pulled over by cops I won't be surprised like my god I scare people in there vehicles if there windows are open LOL. But yea, luckily those 4.10 gears pick it up fast, does feel little less torquey for sure, but it still is overall faster id say it helped the 0-60! I'll just have to get some UDP's, and a good TB/Plenum combo to help make up for it!

I installed the Org.40's Flow-masters with an off road H-pipe + shorty headers. I'm sure I picked up a good 15-20-HP on my 5 liter 5 spd. I'm also getting the BBK-70-MM Throttle body that's good for 12-15-HP. My friend from Lord-co told me not to go with the UDP-kit unless I am racing my car. He said I'll have trouble with the charging??

When you do get some UDP's, make sure you go with the Steeda ones.Stay away from the piggy back designed ones!! Just do a search on google.

The UDP's create less drive on all your accessories so you can gain more power, one of them being your alternator so charging is a little less from what I heard. A lower gear like 4.10 for example wil keep most driving you do in the higher RPM so it makes up for the less charge, and you usually don't have to worry about it unless u got a big sound system or lots of interior accessories that would drain battery.