Exhaust system test graphs and pics posted

MASSIVE TYPE IV · Post by **MASSIVE TYPE IV** » Thu Jan 27, 2005 2:57 pm

Charles got it all posted go check it out!

The results are definately not what anyone anticipated!

http://www.aircooledtechnology.com/r_d_exhaust.htm

aircooledtechguy · Post by **aircooledtechguy** » Thu Jan 27, 2005 4:21 pm

R&D is better when the outcome is NOT what you expect. VERY interesting developments. Thanks!!

MASSIVE TYPE IV · Post by **MASSIVE TYPE IV** » Thu Jan 27, 2005 5:36 pm

BTW- the 2.5" and 3" magnaflow tests are inverted on the site- Charles made an error.

This is exactly why we do test work... Its so damn exciting to drop that hammer on a new test everytime!

Plastermaster · Post by **Plastermaster** » Thu Jan 27, 2005 5:53 pm

The A1 sure did perform! Its interesting how all the different headers handled that little wiggle around 300RPM. The tangerine smoothed it out pretty good, as did the turbo Thos, but the thos crapped out at the higher rpms. The A1 really shone there from peak torque and up to 6500, and brought that peak 500rpm earlier.

I feel like a sports announcer! LOL Wheres my chalk board?

Ron

farmer · Post by **farmer** » Fri Jan 28, 2005 4:58 am

Yeah, been looking at that dip too. That must be "feelable" on the street dont you think?
And BTW. How did the fuel curve respond to that drop ? I´ve seen a similar drop in Co & O2 where the drop occurs.
T.

MASSIVE TYPE IV · Post by **MASSIVE TYPE IV** » Fri Jan 28, 2005 7:43 am

I don't think you'd feel it in a car...

Sandeep · Post by **Sandeep** » Fri Jan 28, 2005 7:53 am

Cangratulations on the completion of your testing. Its amazing to see how much HP the dual muffs of the BAS consume.

I was wondering if you could email me the graph of the BAS header with the single magnaflow muffler. This is similar to the system I am currently running (BAS header with single dynomax muffler) and I need to make an educated choice on the A1 system before Feb 1st comes around !

Thanks for your excellent efforts to date.

Sandeep

MASSIVE TYPE IV · Post by **MASSIVE TYPE IV** » Fri Jan 28, 2005 8:11 am

I'll post it here after while..

Plastermaster · Post by **Plastermaster** » Fri Jan 28, 2005 12:06 pm

farmer wrote:Yeah, been looking at that dip too. That must be "feelable" on the street dont you think?
And BTW. How did the fuel curve respond to that drop ? I´ve seen a similar drop in Co & O2 where the drop occurs.
T.

I agree with Jake in that it probably would not be noticed. When you look at the actual torque value, you are still going to be hauling ass. Its not like getting to 3K and then you slow down. When you are around 150 ft/lbs, how long are you going to be in that range to notice? LOL

Ron

MASSIVE TYPE IV · Post by **MASSIVE TYPE IV** » Fri Jan 28, 2005 12:13 pm

You may see it in a bus while towing a bug behind you! The dyo shows things a car never will

farmer · Post by **farmer** » Fri Jan 28, 2005 5:08 pm

Yes, the average torque is very good. - I had same type of curve on a 1680 T1 a while back, with the drop from about 3K to 3350 rpm. Didnt feel it when we went through the gears haulin´ b***, but a significant sense of "loosing" power when pushed, say in third from say 2500. And the Co & O2 curve leaned out in the same spot.
T.

Racer Chris · Post by **Racer Chris** » Sat Jan 29, 2005 8:01 am

I am truly impressed with the A-1 performance.
It clearly points out to me some deficiencies I already knew existed with the Beetle and 912E Tangerine headers,
but I didn't know how much they were impacting the performance.
I have already begun fabrication of an improved header to correct the shortcomings,
and my hope is to incorporate some other desirable features at the same time.
Stay tuned!

tuna · Post by **tuna** » Sat Jan 29, 2005 9:54 am

Chris,

That sounds great!! We need choices, as some people prefer the way your header is laid out. Good luck on it and I'll be eager to hear about how the new design works.

Tuna

Plastermaster · Post by **Plastermaster** » Sat Jan 29, 2005 12:43 pm

Cris, Thanks for participating in this! Sometimes manufacturers will not get near independant testing like we have here. You obviously are in spirit with the rest of us.

Ron

MASSIVE TYPE IV · Post by **MASSIVE TYPE IV** » Sat Jan 29, 2005 1:55 pm

Chris is a different breed, thats why he is trying to improve his product instead of getting mad and complaining about fairness...