because streetcar / because racecar my custom ft86speedfactory varex exhaust

[mad_sb]

Originally Posted by overlookedx

That's pretty awesome, I was looking for something like this setup for when I get my headers.. quiet on the street, but open it up on the track or when I feel like it, and with a single exit like the FT86SF V2. I'm curious to know how this holds up over time, and also how difficult it is to wire everything together?

wiring is cake, one plug for the muffler (pre wired) and then plug it into the cigarette lighter if you want, i opted to mount the control box in the trunk and tap power from my backup camera power and ground that i ran off a mini add-a-circuit.

Originally Posted by Doctor Who

That is so awesome ...

Thanks man!

Originally Posted by Calum

What's the muffle made of?

Awesome stuff as always. I can't wait to see the dyno results.

I think it is stainless, they have more details on the varex website. Road dyno of open vs closed in next post

[mad_sb]

So,

The header finally arrived yesterday around 3. There was a slight mix-up, I had ordered non-catted, with extra bung. The secondary that shipped was catted, no extra bung :{

I decided to make lemonade though @FA20Club.com was king enough to agree to let me test the catted section over the weekend and decide if i really want the non-catted... In short, yes, yes i do want the non catted. The varex does such a good job at keeping the volume down when it's closed that i end up leaving it closed most of the time... I'll post some vids in a bit.

For now, here is a road dyno comparison of varex closed vs varex open. Exact same stretch of road, 4 minutes apart, no change but pushing the button to open the butterfly. Before anyone complains about road dyno blahh blah.. I over layed back to back runs on my next tune revision and they were almost identical so.. yeah

[mad_sb]

A few thought from today's test N tune.. the resonator in the V2 midpipe needs to be longer to get the sound where i want it. I noticed even on the stock header that there are a few raspy spots in the rev range, it's not so bad when the varex is closed, but when it's open, especially with the header, ohh man, heel-toe blips are raspy race car for sure. I think this is mainly due to the length of the midpipe resonator.. it is about 1/3 the length of the factory resonator.

[Apexer]

Dang it, I hope mine isn't raspy......

[mad_sb]

Originally Posted by Apexer

Dang it, I hope mine isn't raspy......

My setup is completely different. I would not even compare mine to a traditional single exit V2. The varex muffler is nothing like the standard muffler they use so it is not an apples to apples comparison. Not to mention I am on a header and a over / front pipe. If all you are doing is the catback will not sound like mine at all.

[mad_sb]

Adding a few clips.. Don't mind the wideband reading, the sensor is not installed right now

[ame="http://youtu.be/62dYM8Fkc5Q"]2700 rpm cruise opening and closing the Varex, windows up.[/ame]

[ame="http://youtu.be/sYtxVntJcSI"]Idle Blips in the garage varex open vs closed[/ame]

[ame="http://youtu.be/J4fcFv18SHU"]Reving it out in 2nd gear windows up[/ame]

[Canehda]

Originally Posted by mad_sb

i used the vmk10-250 muffler. if i were to do it over again, i think i would go with a smaller can and probably round rather than oval. at the time i wanted the biggest can they had to make sure it was quiet. Built, and shipped i came in at $1038.

Total catback weight is 30lbs right on the button. Sound levels taken from a free android app so only for the sake of comparison:

• stock muffler cold start - 87db
• stock muffler warm idle - 75db
• varex cold start closed - 84db
• varex cold start open - 90db
• varex warm idle closed - 70db
• varex warm idle open - 80db

Better video's to come...

Are these figures with the catless header? I've recently started looking into this and have seen people saying that even the cannon style muffler, sound levels are LESS than stock which astounds me. Ive been wanting to get a borla UEL header for a while but want to be able to lie low and not piss off all my neighbours on the way to the track

[stoked_on_spool]

BUMP because I'm interested in doing this sort of thing with my car too and want more info. Thanks for posting this up @mad_sb

[eighty666]

im doing something similar. just adding a butterfly valve on one side of the dual exhaust and a quiet muffler to the other side. i hope i can get it super quiet. i really want it dead quiet but i have no cats and full header back exhaust. what quiet mufflers are out there?

[Andrew025]

Originally Posted by eighty666

im doing something similar. just adding a butterfly valve on one side of the dual exhaust and a quiet muffler to the other side. i hope i can get it super quiet. i really want it dead quiet but i have no cats and full header back exhaust. what quiet mufflers are out there?

Why not just put the cutout (butterfly valve) after the front pipe?
Would be simple to do.

[eighty666]

Originally Posted by Andrew025

Why not just put the cutout (butterfly valve) after the front pipe?
Would be simple to do.

that would close the exhaust completely.

this is what im doing. not exactly like this, i have a different exhaust but u get the idea.

[Andrew025]

Originally Posted by eighty666

that would close the exhaust completely.

this is what im doing. not exactly like this, i have a different exhaust but u get the idea.

The way I mentioned wouldn't close it completely. It would be just like stock until you open the cutout.
I guess it wouldn't work for you though since you already have a loud set up. It would have been good for someone with the stock exhaust.

[eighty666]

Originally Posted by Andrew025

The way I mentioned wouldn't close it completely. It would be just like stock until you open the cutout.
I guess it wouldn't work for you though since you already have a loud set up. It would have been good for someone with the stock exhaust.

yea you could run stock exhaust with just a dump but then its extremely loud and no back pressure at all

[Andrew025]

Originally Posted by eighty666

yea you could run stock exhaust with just a dump but then its extremely loud and no back pressure at all

Well yeah, the purpose would be to make it loud.

Don't bring up backpressure, it's irrelevant.