N power s/s muffler

Szemen · Postby **Szemen** » Sat Mar 28, 2009 5:26 pm

AB7 wrote:
sliq wrote:
philz wrote:But to hazard a guess, with +center pipe+ muffler +new cat= maybe 10kw?

you'd be lucky to get 5kw.

Well during vic dyno day, Stevesports car made 10 rwkw more than Wun. The main difference is he has mid pipe with highflow cat and cheap pod filter. So 10 rwkw for exhaust mod is very much achievable, rear muffler prob just make around 2-3 rwkw, what's important to invest in high Flow cat when you do your mid pipe.

With the cheap pod filter, was it from the stock pipes? If the intake was on the hot side, was there heatshielding?

Hot Rodders · Postby **Hot Rodders** » Sat Mar 28, 2009 5:38 pm

DJL wrote:Well, I went and visited James this morning and got one,fitted it up, and love it. Great note,quite deep, but it lets you know its there.Can't say I've got more power, or response, but it sounds great and thats what counts. Thanks all for your help and suggestions.

Enjoy!

Cent · Postby **Cent** » Sat Mar 28, 2009 6:05 pm

The power difference between these cars on the dyno is not always because of mods, what about if they have worn spark plugs and leads or one car has 200,000km on it. Some motors are also just freaks.

bensale · Postby **bensale** » Sat Mar 28, 2009 11:37 pm

DJL wrote:Well, I went and visited James this morning and got one,fitted it up, and love it. Great note,quite deep, but it lets you know its there.Can't say I've got more power, or response, but it sounds great and thats what counts. Thanks all for your help and suggestions.

Did you have the gold nb8a? I think you turned up just as I was leaving. Nice car

CheyneX5 · Postby **CheyneX5** » Sun Mar 29, 2009 11:16 am

I do admit, yours was very nice. I was the taller guy with the red NA.

bensale · Postby **bensale** » Sun Mar 29, 2009 8:32 pm

DJL wrote:With the glasses,looking at the new MX brochure?

No that would be me (I had the white one)... Cheyne was the even taller one

Hot Rodders · Postby **Hot Rodders** » Sun Mar 29, 2009 9:15 pm

DJL wrote:Yeah, that was me. Good as gold.

AMEN!

pcmx5 · Postby **pcmx5** » Mon Mar 30, 2009 8:23 am

Cent wrote:The power difference between these cars on the dyno is not always because of mods, what about if they have worn spark plugs and leads or one car has 200,000km on it. Some motors are also just freaks.

You are right to a degree, and the difference can be 3-4 RWKW, but I have done enough before and after testing on the same cars to say that a good catback ( eg Town and country) will give between 6-9 RWKW.No other mods between runs.

That's same car same day run one stock, run two cat back.

There were three NB8b's at the Vic Dyno day and the results again support that.

It is easy to always point to individual differences bbut when you get these sort of results it is fairly conclusive, a decent catback works and it would also appear that a high flow steel cat has advantages too from our results.

I am really busy at work at the moment but will get around to doing the full write up I promised on the Vic Dyno day as soon as i can.

Peter