Least rasp, deepest CBE paired with PPE LTH?

SS_Firehawk · 10-04-2013, 04:57 AM

If you wanted deep sound, headers do the opposite. Resonators do that.

MarlinZ · 10-04-2013, 06:43 PM

Well I guess I should clarify, I just don't want the rasp lol. The sound is fine I understand that it's not going to be as deep as It was now that it's opened up more.

synolimit · 10-04-2013, 06:52 PM

I did, just finished. Took the oem resonators and cut the ends just right to weld onto the x pipe. The other end is blocked off. Lost 90% of the horrible rasp and about 20-30 decibels which I'm sad about. O well it's worth it for no more rasp.

Sh0velMan · 10-04-2013, 10:38 PM

Quote:

Originally Posted by synolimit

I did, just finished. Took the oem resonators and cut the ends just right to weld onto the x pipe. The other end is blocked off. Lost 90% of the horrible rasp and about 20-30 decibels which I'm sad about. O well it's worth it for no more rasp.

I doubt you lost 20-30 dB.

For reference, 6 dB down is half as loud as it was before. 12 dB down is half of half.

Just picking nits tho, glad it worked.

synolimit · 10-04-2013, 11:54 PM

Quote:

Originally Posted by Sh0velMan

I doubt you lost 20-30 dB.

For reference, 6 dB down is half as loud as it was before. 12 dB down is half of half.

Just picking nits tho, glad it worked.

We'll I can't prove you wrong because it's fixed but I'm sticking to my guns

. I have a meter but the batteries dead at the moment. I bought it because race bike rules were at 4 feet back at a 45* angle from the exhaust tip at half throttle you couldn't be over 105db. My bike was 105-106

. Based off that I'd say my car was 100 at start up, crazy loud for a car at 2k rpm!! Now its about 80. Ill test tomorrow.

PS wife was sleeping first start up and it shook the house, scared her, and she had no idea it was my car or any car based of the type of sound and the volume. She likes it much better now.

Sh0velMan · 10-05-2013, 07:29 AM

Quote:

Originally Posted by synolimit

We'll I can't prove you wrong because it's fixed but I'm sticking to my guns

. I have a meter but the batteries dead at the moment. I bought it because race bike rules were at 4 feet back at a 45* angle from the exhaust tip at half throttle you couldn't be over 105db. My bike was 105-106

. Based off that I'd say my car was 100 at start up, crazy loud for a car at 2k rpm!! Now its about 80. Ill test tomorrow.

PS wife was sleeping first start up and it shook the house, scared her, and she had no idea it was my car or any car based of the type of sound and the volume. She likes it much better now.

Sounds like when I was running mine with no exhaust, just a Y-pipe after the headers, for a while there when I was waiting for my exhaust to come in.

synolimit · 10-05-2013, 01:29 PM

Lol yeah that'd prob do it. I think I'm going to cut off the mufflers because they 90 degree turn twice. Thinking about doing straight pipes with 2 more Helmholtz like motordyne.

MarlinZ · 10-05-2013, 01:55 PM

How do you guys think the motordyne system would sound with the ppe?

synolimit · 10-05-2013, 02:08 PM

I'm going to remove mufflers first so maybe I can find out. Not going to be the same thing since my Helmholtz are up front and there's are in the rear but who knows.

SS_Firehawk · 10-05-2013, 05:44 PM

It will be loud, Tony@Motordyne said it wouldn't rasp, it has one large X pipe resonator and J tubes in the rear.

synolimit · 10-05-2013, 06:47 PM

Quote:

Originally Posted by SS_Firehawk

It will be loud, Tony@Motordyne said it wouldn't rasp, it has one large X pipe resonator and J tubes in the rear.

Good!!

I wonder if I should leave the mid resonators I have with helmholtz at the rear or pull them. Helmholtz seem to do more than inlines.

MarlinZ · 10-05-2013, 06:59 PM

How can I get in contact with tony at motordyne? I sent a pm to motordyne a few days ago and got no reply back. Also what is the difference between the shockwave e370 and t370?

SS_Firehawk · 10-05-2013, 08:27 PM

One of them uses full tig welds, 304 stainless steel and polished. The other uses a mild steel mig welds in most areas and not polished. For contact, it's best to call. Tony is the man. He went to see me when I was in cali to help me troubleshoot my manifold.

MarlinZ · 10-05-2013, 09:56 PM

I've called like 5 different times lol. I guess I'll keep trying until I get a hold of someone.

ZKraken22 · 10-06-2013, 10:06 AM

PPE aren't LTH so do you have to add HFC or TP? PPE are equal length right?

10-04-2013, 04:57 AM	#31 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	If you wanted deep sound, headers do the opposite. Resonators do that. __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction

10-05-2013, 01:29 PM	#37 (permalink)
synolimit A True Z Fanatic Join Date: May 2013 Location: Columbus, OH Posts: 5,051 Drives: 2013 Silver 370z Rep Power: 3390	Lol yeah that'd prob do it. I think I'm going to cut off the mufflers because they 90 degree turn twice. Thinking about doing straight pipes with 2 more Helmholtz like motordyne. __________________ 13 370z- Last edited by synolimit; 10-05-2013 at 02:05 PM.

10-05-2013, 02:08 PM	#39 (permalink)
synolimit A True Z Fanatic Join Date: May 2013 Location: Columbus, OH Posts: 5,051 Drives: 2013 Silver 370z Rep Power: 3390	I'm going to remove mufflers first so maybe I can find out. Not going to be the same thing since my Helmholtz are up front and there's are in the rear but who knows. __________________ 13 370z-

10-05-2013, 05:44 PM	#40 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	It will be loud, Tony@Motordyne said it wouldn't rasp, it has one large X pipe resonator and J tubes in the rear. __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction

10-05-2013, 08:27 PM	#43 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	One of them uses full tig welds, 304 stainless steel and polished. The other uses a mild steel mig welds in most areas and not polished. For contact, it's best to call. Tony is the man. He went to see me when I was in cali to help me troubleshoot my manifold. __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction Last edited by SS_Firehawk; 10-06-2013 at 12:34 AM.

10-04-2013, 06:43 PM	#32 (permalink)
MarlinZ Enthusiast Member Join Date: May 2013 Location: Ukiah,Ca Posts: 300 Drives: '10 370Z PG M6 Rep Power: 13	Well I guess I should clarify, I just don't want the rasp lol. The sound is fine I understand that it's not going to be as deep as It was now that it's opened up more.

10-05-2013, 01:55 PM	#38 (permalink)
MarlinZ Enthusiast Member Join Date: May 2013 Location: Ukiah,Ca Posts: 300 Drives: '10 370Z PG M6 Rep Power: 13	How do you guys think the motordyne system would sound with the ppe?

10-05-2013, 06:59 PM	#42 (permalink)
MarlinZ Enthusiast Member Join Date: May 2013 Location: Ukiah,Ca Posts: 300 Drives: '10 370Z PG M6 Rep Power: 13	How can I get in contact with tony at motordyne? I sent a pm to motordyne a few days ago and got no reply back. Also what is the difference between the shockwave e370 and t370?

10-05-2013, 09:56 PM	#44 (permalink)
MarlinZ Enthusiast Member Join Date: May 2013 Location: Ukiah,Ca Posts: 300 Drives: '10 370Z PG M6 Rep Power: 13	I've called like 5 different times lol. I guess I'll keep trying until I get a hold of someone.

10-06-2013, 10:06 AM	#45 (permalink)
ZKraken22 A True Z Fanatic Join Date: Jun 2011 Location: Houston Posts: 1,115 Drives: 10 Nissan 370Z 7AT Rep Power: 17	PPE aren't LTH so do you have to add HFC or TP? PPE are equal length right? __________________ Litespeed Racing Titanium Cold Air intake// GT Haus Axle// GarageLine combo// Nismo sway bars// Nismo Spoiler // Berk TP's

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