downpipe question

boogum7 · 11-03-2006, 07:19 AM

i am thinking of getting a 3" downpipe for the supra.

i was just wondering if the flex pipe is needed in the downpipe.

does it do what it sounds like, give the exhaust a little "flex?"

thanks for any response

Bill UK · 11-03-2006, 10:12 PM

I asked HKS the same question but didn’t get an answer. I can only assume having a flex joint doesn’t transmit any engine movement to the exhaust. Having said that the standard stock exhaust with front cat is ridged. Good question would be interested in the answer.

boogum7 · 11-05-2006, 07:46 AM

does anyone have any idea on this?

kwnate · 11-05-2006, 05:30 PM

Its better to have a flex section, as the motor rotates you're stressing the exhaust and the exhaust manifold. Also important if you bottom out your exhaust. I think its a good idea, that being said I don't run a flex section on my car. I have solid motor mounts though.

nelly26 · 11-06-2006, 01:13 AM

it does not matter as the 7mgte does not move alot and if it does its very slightly from side to side my exhaust has been upgraded but has no flexi pipe

boogum7 · 11-06-2006, 02:32 AM

thanks that will help me in my downpipe choice.

11-03-2006, 07:19 AM	#1
boogum7 3" Exhaust Join Date: Dec 2005 Location: Pocatello, Idaho 83201 Posts: 103	downpipe question i am thinking of getting a 3" downpipe for the supra. i was just wondering if the flex pipe is needed in the downpipe. does it do what it sounds like, give the exhaust a little "flex?" thanks for any response __________________ stock

11-05-2006, 07:46 AM	#3
boogum7 3" Exhaust Join Date: Dec 2005 Location: Pocatello, Idaho 83201 Posts: 103	anyone? does anyone have any idea on this? __________________ stock

11-05-2006, 05:30 PM	#4
kwnate SP58GT Join Date: Jul 2005 Location: USA Posts: 633	Its better to have a flex section, as the motor rotates you're stressing the exhaust and the exhaust manifold. Also important if you bottom out your exhaust. I think its a good idea, that being said I don't run a flex section on my car. I have solid motor mounts though. __________________ Nate

11-06-2006, 02:32 AM	#6
boogum7 3" Exhaust Join Date: Dec 2005 Location: Pocatello, Idaho 83201 Posts: 103	great! thanks that will help me in my downpipe choice. __________________ stock

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11-03-2006, 10:12 PM	#2
Bill UK AEM EMS Join Date: Jul 2006 Location: UK Posts: 891	I asked HKS the same question but didn’t get an answer. I can only assume having a flex joint doesn’t transmit any engine movement to the exhaust. Having said that the standard stock exhaust with front cat is ridged. Good question would be interested in the answer.

11-06-2006, 01:13 AM	#5
nelly26 3" Exhaust Join Date: Oct 2006 Location: UNITED KINGDOM Posts: 58	it does not matter as the 7mgte does not move alot and if it does its very slightly from side to side my exhaust has been upgraded but has no flexi pipe