 |
01-26-2021, 01:23 PM
|
#1
|
Registered User
Join Date: Feb 2017
Location: Stockholm
Posts: 262
|
200 cel -> testpipes + FVD Sound version.
I have been thinking..  Yes, itīs true..
I read and have heard that those running test pipes actually get less drone than the ones running eg 200 cel sport cats. Can this be correct? Or is it just the increased overall volume that makes the drone less obvoius?
If so, would you think that I could use my old 200 cel cat-pipes, just drill (and use general violence) out the cat-substrate and use this as test pipes? Or will the actual "bulb" where the cat used to be create drone or some other bad effects?
I run: ebay headers (no cats) and FVD sound version at the back.
Last edited by Robert986; 01-26-2021 at 01:40 PM.
|
|
|
01-26-2021, 03:37 PM
|
#2
|
Registered User
Join Date: Oct 2020
Location: KY
Posts: 183
|
Circuitwerks, the company that sells a lot of the ebay test pipes, sells a "resonated" version of them which is what you're describing. I have no idea what they sound like but you may try to reach out to circuitwerks and ask, or find someone who has installed those.
Sent from my POCOPHONE F1 using Tapatalk
__________________
2000 Box Base, currently undergoing renegade modifications
When the owners manual says that the laws of physics can't be broken by this car, I took it as a challenge...
|
|
|
01-27-2021, 06:06 AM
|
#3
|
Registered User
Join Date: Apr 2011
Location: Alabama
Posts: 486
|
If your 200 cell sport cats are still good, wouldn't it make more sense to save the labor of drilling them out, sell them, buy some catless midpipes to install, and pocket the difference as future beer money?
|
|
|
01-27-2021, 08:06 AM
|
#4
|
Registered User
Join Date: Feb 2017
Location: Stockholm
Posts: 262
|
Quote:
Originally Posted by BrokenLinkage
If your 200 cell sport cats are still good, wouldn't it make more sense to save the labor of drilling them out, sell them, buy some catless midpipes to install, and pocket the difference as future beer money?
|
I get your point.. I cannot pass MOT with those cats, I doubt they are genuine 200cel, they basically suck.. :-)
|
|
|
01-27-2021, 03:23 PM
|
#5
|
Registered User
Join Date: Jan 2021
Location: Long Island NY/ Daytona Beach FL
Posts: 9
|
I have Manzo catless headers and Manzo catless test pipes with a circuitwerks v2 muffler. I get little to no drone. I don't have any experience with the stock exhaust as I almost immediately removed it.
|
|
|
01-28-2021, 06:36 AM
|
#6
|
550 Anniversary
Join Date: Jul 2012
Location: Surrey, UK
Posts: 705
|
Quote:
Originally Posted by Robert986
I get your point.. I cannot pass MOT with those cats, I doubt they are genuine 200cel, they basically suck.. :-)
|
They are cheap and on eBay
That said mine pass a UK MOT and have done for several years. 1 year it was very tight for some unknown reason but the next year with no changes there were no issues.
|
|
|
01-30-2021, 06:43 AM
|
#7
|
Registered User
Join Date: Feb 2017
Location: Stockholm
Posts: 262
|
Quote:
Originally Posted by edc
They are cheap and on eBay
That said mine pass a UK MOT and have done for several years. 1 year it was very tight for some unknown reason but the next year with no changes there were no issues.
|
Thatīs the thing with cheap, if they work itīs great, if not, no big deal.
Plan now is to just cut the cats out and weld in a bit of pipe to run them as "testpipes".
|
|
|
01-30-2021, 11:48 AM
|
#8
|
550 Anniversary
Join Date: Jul 2012
Location: Surrey, UK
Posts: 705
|
We call then decat pipes and you can buy them on ebay too. There are one which are straight through pipe and others which look like they have a cat but it has no core.
|
|
|
02-16-2021, 10:13 AM
|
#9
|
Registered User
Join Date: Feb 2017
Location: Stockholm
Posts: 262
|
Thanks for replys guys, soon I will know the answer.. Cut the cats away and made me a qouple of straight pipes. So I will go: Catless headers -> pipes -> FVD Sound version.
After a looong wait Iīll finally have my day at the dyno in the middle of mars this year. Doing the classic 987-airbox/MAF, IPD + 74mm TB + full day mapping on the dyno. Wish me luck! Was aiming for the 996 intake but didnīt manage.
Last edited by Robert986; 02-16-2021 at 10:16 AM.
|
|
|
02-16-2021, 01:12 PM
|
#10
|
Registered User
Join Date: Oct 2008
Location: O.C. CA
Posts: 3,649
|
Quote:
Originally Posted by Robert986
Thanks for replys guys, soon I will know the answer.. Cut the cats away and made me a qouple of straight pipes. So I will go: Catless headers -> pipes -> FVD Sound version.
After a looong wait Iīll finally have my day at the dyno in the middle of mars this year. Doing the classic 987-airbox/MAF, IPD + 74mm TB + full day mapping on the dyno. Wish me luck! Was aiming for the 996 intake but didnīt manage.
|
I have a pair of Fabspeed 987 sport-cats that i was going to remove the cat "bricks" and use on my 986 that I will sell.
__________________
OE engine rebuilt,3.6 litre LN Engineering billet sleeves,triple row IMSB,LN rods. Deep sump oil pan with DT40 oil.
|
|
|
Thread Tools |
|
Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is On
|
|
|
All times are GMT -8. The time now is 11:46 PM.
| |