Nasa TT exhaust clairification - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

redlined600 · 01-27-2015, 03:58 PM

I’m looking for a bit of clarification on NASA TT exhaust points.

The 2015 rule is the following:

22) Modification, porting, or replacement of the BMT exhaust manifold or header(s) (includes any/all other exhaust and catalytic converter modifications) +5 23) Any modification to the BTM exhaust piping and/or catalytic converter (includes muffler modification or replacement) +3
24) Non-BTM or modified resonator(s) or muffler(s) only (no exhaust piping modifications) +1

So is a header 5pts(22) and the rest of the exhaust is 3pts(23) or is the entire exhaust system 5 pts(22). Conversely is just a header 8 points encompassing 22 and 23.

I’m not looking to debate whether or not these are worthwhile points.

phastafrican · 01-27-2015, 07:08 PM

Entire system is +5
Any modification to header alone, regardless of the rest makes it +5, so the rest is 0
Anything after header is +3 regardless of the rest of exhaust.
Muffler only +1.

MrFabulous · 01-28-2015, 08:53 AM

So if I take off the rear muffler at the flange and add a straight pipe it's 1 point or no. Because technically it is an exhaust pipe modification. I don't know how picky NASA is.

King Tut · 01-28-2015, 10:48 AM

Quote:

Originally Posted by MrFabulous

So if I take off the rear muffler at the flange and add a straight pipe it's 1 point or no. Because technically it is an exhaust pipe modification. I don't know how picky NASA is.

1 point. The pickiness is determined by the director, your competitors, and how fast you are.

phastafrican · 01-28-2015, 11:01 AM

Quote:

Originally Posted by MrFabulous

So if I take off the rear muffler at the flange and add a straight pipe it's 1 point or no. Because technically it is an exhaust pipe modification. I don't know how picky NASA is.

Quote:

Originally Posted by King Tut

1 point. The pickiness is determined by the director, your competitors, and how fast you are.

^^^ +1

Yes, it is technically exhaust piping, but that's there to prevent people from cutting out just the cat and replacing it with the same diameter pipe to invoke just the previous +1 only mod for catalytic converter.

The addition of 'includes muffler modification' is there to say that the +1 muffler mod has been invoked as soon as you touch the catalytic coverter

MrFabulous · 01-28-2015, 05:33 PM

Ok, cool. I'm not there yet but I like to be prepared. Thanks!

AZP Installs · 01-30-2015, 09:12 AM

Yup as I read it I agree with my other NASA colleagues!

-mike

01-27-2015, 03:58 PM	#1
redlined600 Senior Member Join Date: Nov 2014 Drives: Fr-s Location: MN Posts: 733 Thanks: 125 Thanked 492 Times in 266 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	Nasa TT exhaust clairification I’m looking for a bit of clarification on NASA TT exhaust points. The 2015 rule is the following: 22) Modification, porting, or replacement of the BMT exhaust manifold or header(s) (includes any/all other exhaust and catalytic converter modifications) +5 23) Any modification to the BTM exhaust piping and/or catalytic converter (includes muffler modification or replacement) +3 24) Non-BTM or modified resonator(s) or muffler(s) only (no exhaust piping modifications) +1 So is a header 5pts(22) and the rest of the exhaust is 3pts(23) or is the entire exhaust system 5 pts(22). Conversely is just a header 8 points encompassing 22 and 23. I’m not looking to debate whether or not these are worthwhile points.

01-27-2015, 07:08 PM	#2
phastafrican Senior Member Join Date: Mar 2013 Drives: 2013 Raven Scion FR-S Location: Fernandina Beach, FL Posts: 437 Thanks: 118 Thanked 171 Times in 112 Posts Mentioned: 13 Post(s) Tagged: 3 Thread(s)	Entire system is +5 Any modification to header alone, regardless of the rest makes it +5, so the rest is 0 Anything after header is +3 regardless of the rest of exhaust. Muffler only +1. __________________ Emmanuel Baako: NASA-Southeast Race Control & NASA Florida Race Director RaceCar:2013 Scion FR-S #986 NASA PTD \|\| Tow:2011 Dodge Durango R/T

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01-28-2015, 08:53 AM	#3
MrFabulous Member Join Date: Oct 2014 Drives: Between Cars Location: Chicago, IL Posts: 29 Thanks: 1 Thanked 2 Times in 2 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	So if I take off the rear muffler at the flange and add a straight pipe it's 1 point or no. Because technically it is an exhaust pipe modification. I don't know how picky NASA is.

01-28-2015, 05:33 PM	#6
MrFabulous Member Join Date: Oct 2014 Drives: Between Cars Location: Chicago, IL Posts: 29 Thanks: 1 Thanked 2 Times in 2 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Ok, cool. I'm not there yet but I like to be prepared. Thanks!

01-30-2015, 09:12 AM	#7
AZP Installs Join Date: Oct 2011 Drives: '11 STi->'14 BRZ \| '14 Touareg TDi Location: Kenilworth, NJ Posts: 1,269 Thanks: 359 Thanked 557 Times in 371 Posts Mentioned: 49 Post(s) Tagged: 0 Thread(s)	Yup as I read it I agree with my other NASA colleagues! -mike

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