Dynoed and wondering what a Cat would do

[WADE30]

Hey guys dynoed the car a while back.

Performance Specs:
Full OEM rebuilt M50tu
TRM Custom Tune Chip
S50 Cams
24# Bosch Injectors
3.5" Euro HFM
Amsoil Intake
Super Sprint replica headers
Custom 3" exhaust, no Cat, Vibrant 3" Muffler
ZF Transmission
3.25 LSD

Made 200whp and 171 ftlbs of torque.

If I were to add a high performance cat would that change anything? Increase numbers slightly or do nothing at all.

Is it true more back pressure from the cat could increase torque but reduce hp?

Myth?

Thanks!

[lolcantturn]

I love your car. so stock looking

[WADE30]

How is this relevant? How many threads did you have to shit in to get 2579 posts in and year and a half?

[jaywood]

Nando will be here in no time. (hopefully!)

He knows his exhausts.

[Robert]

Can I get a sound clip of your exhaust?

I'm planning on doing the same setup.

[WADE30]

Can I get a sound clip of your exhaust?

I'm planning on doing the same setup.

I will try tomorrow, oh man even right now with not cat it's not raspy. It's deep and screams when I hit the throttle. Amazing sound to be honest.

[Robert]

Can you show me the link to the muffler you have?

I cant seem to find a nice single inlet , dual out muffler. All i find is single in single out

[WADE30]

This is the one I got 3 years ago I'm pretty sure. Just got the 3-inch piping and made the whole system myself.

Here:http://vibrantperformance.com/catalo...oducts_id=1162

[trackjunkie21]

How is this relevant? How many threads did you have to shit in to get 2579 posts in and year and a half?

I guess you don't like compliments? lol Backpressure does not increase torque.

[328ijunkie]

^true and not true.

[trackjunkie21]

^true and not true.

very true, Resonance of exhaust gasses is what creates torque gains, besides any alteration after a Y pipe or an X pipe does not aid in torque production.

[lolcantturn]

How is this relevant? How many threads did you have to shit in to get 2579 posts in and year and a half?

Wow fuck off and take the dick out of your ass I was complimenting your car.

[WADE30]

Wow fuck off and take the dick out of your ass I was complimenting your car.

I'm sorry dude, I thought your depression was causing you to look for attention.

But anyways, thanks dude.

Cheers!

[WADE30]

I guess you don't like compliments? lol Backpressure does not increase torque.

So what you're saying is, whether I have a straight 3 inch pipe or a catalytic converter in place, the end result is the same?

This was all for curiosity's sake, very interesting.

[treff-7]

i read it somewhere that a ricer (don't me) was tested if it had any power gain after playing with the cat. it was dyno'd with stock cat, hiflow cat and catless. using hiflow cat gave it an extra 4-5 HP and same amount of torque gain. going catless had no gain or 1 HP i can't remember.
i know it's a 4 banger but i would expect similar result with an M50. hope this helps...