Fast Intentions exhaust is here! (continued)

cooltoy · 09-17-2014, 09:44 AM

After about a month, the exhaust has quieted down a lot (which is good IMO, exactly what I wanted). 18" res.

I find it interesting that some days it is quitter then others. I have not pinpointed a consistent reason for it.

I have also started to hear a pop pop sound when the revs are dropping. I know it is backfire, but not sure if anything can be done about it. Is it because the air/fuel ration has changed?

Aardwolf · 09-17-2014, 02:37 PM

I think a lot of us that have ordered FI resonated TDX were on the fence about what size resonator to get, 12 or 18. I'm in that boat, with about 3 more weeks to wait on my 18" res (spoke with FI today, currently on about #1020). I've listened to all the youtube clips until I'm blue in the ear, but still haven't definitively made up my mind. When I spoke with them today, I found out this little nugget that I don't think has been shared enough. If non-res was a 10, and stock was a 0, 18" res would be about a 3, and 12" would be a 7-8. Resonators cut down total noise, not only interior.

With that said, do I want to spend $1400 on a 30% audible increase (albeit a much larger percentage increase in tone quality)? Yes, I'm considering res HFC and Stillen G3 intakes, but only considering. I'm not a fan of the HFC hiss. When you total up RHFC, G3's, Uprev, and labor, we're getting real close to $2000 additional dollars to gain some HPs and dB's. I would hate to feel lacking a few months into owning the exhaust and feel the need to spend that type of cash.

What's your opinion?

SwissCheese · 09-17-2014, 08:58 PM

Quote:

Originally Posted by Aardwolf

I think a lot of us that have ordered FI resonated TDX were on the fence about what size resonator to get, 12 or 18. I'm in that boat, with about 3 more weeks to wait on my 18" res (spoke with FI today, currently on about #1020). I've listened to all the youtube clips until I'm blue in the ear, but still haven't definitively made up my mind. When I spoke with them today, I found out this little nugget that I don't think has been shared enough. If non-res was a 10, and stock was a 0, 18" res would be about a 3, and 12" would be a 7-8. Resonators cut down total noise, not only interior.

With that said, do I want to spend $1400 on a 30% audible increase (albeit a much larger percentage increase in tone quality)? Yes, I'm considering res HFC and Stillen G3 intakes, but only considering. I'm not a fan of the HFC hiss. When you total up RHFC, G3's, Uprev, and labor, we're getting real close to $2000 additional dollars to gain some HPs and dB's. I would hate to feel lacking a few months into owning the exhaust and feel the need to spend that type of cash.

What's your opinion?

How would resonated Test Pipes affect the noise level of the 18" res version?

I currently have an order placed for 18" resonated exhaust w/ resonated Test Pipes, but am worried the 18" resonators are gonna be too quiet.

cooltoy · 10-03-2014, 01:59 PM

Quote:

Originally Posted by cooltoy

I have also started to hear a pop pop sound when the revs are dropping. I know it is backfire, but not sure if anything can be done about it. Is it because the air/fuel ration has changed?

Can anyone comment on this please.

40th_z · 10-03-2014, 02:21 PM

Quote:

Originally Posted by cooltoy

Can anyone comment on this please.

hmm. i dont think i've ever noticed that, i have same set up as you (+ res HFC). Ill listen to it when I leave work today. It sounds like it might be a normal thing. i'm closing in on a year with exhaust and it still sounds amazing with zero issues

09-17-2014, 09:44 AM	#1 (permalink)
cooltoy Elite Member Join Date: Jun 2012 Location: Calgary Posts: 14,001 Drives: 14 PW 370Z S/T MT Rep Power: 243724	After about a month, the exhaust has quieted down a lot (which is good IMO, exactly what I wanted). 18" res. I find it interesting that some days it is quitter then others. I have not pinpointed a consistent reason for it. I have also started to hear a pop pop sound when the revs are dropping. I know it is backfire, but not sure if anything can be done about it. Is it because the air/fuel ration has changed? __________________ Member of kenchan's "photoshopped mods" and "proper offsets" gang.

09-17-2014, 02:37 PM	#2 (permalink)
Aardwolf Base Member Join Date: Sep 2014 Location: South East Posts: 28 Drives: 370Z Sport/Tour 2011 Rep Power: 11	I think a lot of us that have ordered FI resonated TDX were on the fence about what size resonator to get, 12 or 18. I'm in that boat, with about 3 more weeks to wait on my 18" res (spoke with FI today, currently on about #1020). I've listened to all the youtube clips until I'm blue in the ear, but still haven't definitively made up my mind. When I spoke with them today, I found out this little nugget that I don't think has been shared enough. If non-res was a 10, and stock was a 0, 18" res would be about a 3, and 12" would be a 7-8. Resonators cut down total noise, not only interior. With that said, do I want to spend $1400 on a 30% audible increase (albeit a much larger percentage increase in tone quality)? Yes, I'm considering res HFC and Stillen G3 intakes, but only considering. I'm not a fan of the HFC hiss. When you total up RHFC, G3's, Uprev, and labor, we're getting real close to $2000 additional dollars to gain some HPs and dB's. I would hate to feel lacking a few months into owning the exhaust and feel the need to spend that type of cash. What's your opinion? __________________ A few classy mods...

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