Gemini with CNT test pipes

tyler20c · 03-08-2011, 10:19 AM

Anyone running the gemini exhaust with CNT test pipes? searched and couldnt find any feedback. I already have the invidia exhaust and im just wondering how much of a sound difference the cnt resonated test pipes will make on my car. Thanks for the help!

esfourteen · 03-08-2011, 04:28 PM

Quote:

Originally Posted by tyler20c

Anyone running the gemini exhaust with CNT test pipes? searched and couldnt find any feedback. I already have the invidia exhaust and im just wondering how much of a sound difference the cnt resonated test pipes will make on my car. Thanks for the help!

Im running the gemini catback with cnt resonated test pipes, its quite a bit louder at wot, pure sex.

tyler20c · 03-08-2011, 05:21 PM

How about just cruising around town? The car is my daily driver and I just want to make sure it's not obnoxiously loud.

esfourteen · 03-08-2011, 07:22 PM

Quote:

Originally Posted by tyler20c

How about just cruising around town? The car is my daily driver and I just want to make sure it's not obnoxiously loud.

you can barely hear the car until I step on it

tyler20c · 03-09-2011, 12:52 AM

That's honestly the best sounding Z ive heard! I'm pulling the trigger on the CNT test pipes

BLM · 03-09-2011, 06:38 AM

Any CEL issues with the CNT res TP?

esfourteen · 03-09-2011, 05:29 PM

Quote:

Originally Posted by BLM

Any CEL issues with the CNT res TP?

Im uprev'd so the rear O2's are disabled, they have an extension on the test pipe for the secondary O2 so in theory it shouldn't throw a cell.

BLM · 03-09-2011, 05:45 PM

The glory of UpRev!!!

brado · 03-10-2011, 07:41 PM

is there anybody that doesnt have uprev and has the test pipes? im very interested in these pipes but i dont want to throw a cel and also i read the thread about the erz pipes and i dont fully understand what the people were talking about when they put steel wool in the o2 bung. did they mean that extra hole at the end of the pipe?

BLM · 03-14-2011, 10:15 AM

Quote:

Originally Posted by brado

is there anybody that doesnt have uprev and has the test pipes? im very interested in these pipes but i dont want to throw a cel and also i read the thread about the erz pipes and i dont fully understand what the people were talking about when they put steel wool in the o2 bung. did they mean that extra hole at the end of the pipe?

In terms of construction, the best way to avoid a CEL with a TP or HFC is to have an extended, right angle O2 bung (to prevent the O2 sensor from being in direct contact with exhaust gases that have either passed through a HFC or cat-less TP) as is seen with

Fast Intentions:

and, GTM:

ERZ/CNT has the best pricing and members say the quality is good with low incidence of CEL's but the pictures I've seen don't show a right angle bung, though it is extended. In terms of steel wool, you actually shove a ball of tightly packed steel wool down into the O2 sensor bung before you re-attach the O2 sensor to your aftermarket TP/HFC. This is reported to work, but the right angle O2 design of GTM and FI works as well. In addition, if you choose to go the route of short headers +/- TP, you might eventually get a CEL, which can be eliminated with an UpRev tune as stated above. With Long Tube headers you'll need a tune anyway to get the most out of them.

TBSS2008 · 03-14-2011, 11:36 AM

That does sound great! I would have gotten the CNT Test instead of the ERZ HFC if they were out when I purchased. Cheaper, and little more HP.

brado · 03-14-2011, 02:35 PM

Quote:

Originally Posted by BLM

In terms of construction, the best way to avoid a CEL with a TP or HFC is to have an extended, right angle O2 bung (to prevent the O2 sensor from being in direct contact with exhaust gases that have either passed through a HFC or cat-less TP) as is seen with

Fast Intentions:

and, GTM:

ERZ/CNT has the best pricing and members say the quality is good with low incidence of CEL's but the pictures I've seen don't show a right angle bung, though it is extended. In terms of steel wool, you actually shove a ball of tightly packed steel wool down into the O2 sensor bung before you re-attach the O2 sensor to your aftermarket TP/HFC. This is reported to work, but the right angle O2 design of GTM and FI works as well. In addition, if you choose to go the route of short headers +/- TP, you might eventually get a CEL, which can be eliminated with an UpRev tune as stated above. With Long Tube headers you'll need a tune anyway to get the most out of them.

i went ahead and ordered the cnt rtp's. im going to try the steel wool thing and hopefully it will work. if i get a cel i will just clear it out everytime i guess.

batman_4 · 03-14-2011, 02:45 PM

sounds great.

03-08-2011, 10:19 AM	#1 (permalink)
tyler20c Base Member Join Date: Dec 2010 Location: Tampa Posts: 174 Drives: G37 Rep Power: 15	Gemini with CNT test pipes Anyone running the gemini exhaust with CNT test pipes? searched and couldnt find any feedback. I already have the invidia exhaust and im just wondering how much of a sound difference the cnt resonated test pipes will make on my car. Thanks for the help!

03-09-2011, 06:38 AM	#6 (permalink)
BLM Enthusiast Member Join Date: Feb 2011 Location: NJ Posts: 342 Drives: 2011 Silver M6 sport Rep Power: 14	Any CEL issues with the CNT res TP? __________________ K&N // GTM // BERK

03-09-2011, 05:45 PM	#8 (permalink)
BLM Enthusiast Member Join Date: Feb 2011 Location: NJ Posts: 342 Drives: 2011 Silver M6 sport Rep Power: 14	The glory of UpRev!!! __________________ K&N // GTM // BERK

03-10-2011, 07:41 PM	#9 (permalink)
brado Base Member Join Date: Feb 2011 Location: Virginia Posts: 216 Drives: 09 touring w/ sport Rep Power: 14	is there anybody that doesnt have uprev and has the test pipes? im very interested in these pipes but i dont want to throw a cel and also i read the thread about the erz pipes and i dont fully understand what the people were talking about when they put steel wool in the o2 bung. did they mean that extra hole at the end of the pipe? Last edited by brado; 03-11-2011 at 04:45 PM.

03-14-2011, 11:36 AM	#11 (permalink)
TBSS2008 Base Member Join Date: Apr 2009 Location: Texas Posts: 195 Drives: 11 Corvette GS 6spd Rep Power: 16	That does sound great! I would have gotten the CNT Test instead of the ERZ HFC if they were out when I purchased. Cheaper, and little more HP. __________________ 2011 Black Corvette Grand Sport 6spd \| NNP Daul Mode Exhaust 2008 Trail Blazer SS Black \| SuperChips Tune 2009 370Z Black 7AT Touring Sport (TRADED)

03-08-2011, 05:21 PM	#3 (permalink)
tyler20c Base Member Join Date: Dec 2010 Location: Tampa Posts: 174 Drives: G37 Rep Power: 15	How about just cruising around town? The car is my daily driver and I just want to make sure it's not obnoxiously loud.

03-09-2011, 12:52 AM	#5 (permalink)
tyler20c Base Member Join Date: Dec 2010 Location: Tampa Posts: 174 Drives: G37 Rep Power: 15	That's honestly the best sounding Z ive heard! I'm pulling the trigger on the CNT test pipes

03-14-2011, 02:45 PM	#13 (permalink)
batman_4 A True Z Fanatic Join Date: Dec 2008 Location: McAllen Tx. Posts: 1,038 Drives: '09 PW 370Z Rep Power: 368	sounds great. __________________ '09 6spd. Touring: Eibach / SPC / Motordyne / Berk / Z1 / Oneighty / Mines / SSR / Stillen / CFE

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Z1 test pipes, anyone have?	Dan Z Man	Intake/Exhaust	4	11-29-2010 01:11 PM
Wtb used test pipes	ddvette9	Wanted	1	11-11-2010 04:31 PM
Test Pipes	Kcuba370z	Wanted	1	09-23-2010 11:28 AM
invidia gemini + cnt test pipes flyby	esfourteen	Intake/Exhaust	12	08-02-2010 02:30 PM
Hfc vs test pipes	Russ.payne	Intake/Exhaust	5	04-28-2010 06:55 AM