LTH = Installed, Review

jpit · 04-20-2010, 04:20 PM

Maybe the hiss is the pounds and pounds of carbon monoxide and NOX that the car is emitting now that the cats are off.

shumby · 04-20-2010, 04:30 PM

^^^^ gtfo

DannyGT · 04-20-2010, 04:32 PM

You dont have a leak. The hiss/rattle/metalic flutter on these cars once you go test pipes + exhaust is, IMO, horrible. The LTH's are amazingly gorgeous pieces. The fact they're being made by F.I. is an honor as their work is proven perfection. Only problem I see with them is they magnify that test pipe rasp 2x. Maybe they made a way to make the rasp sound good, ie; rattlesnake

My opinion on the rasp is, its harmonic. It seems when you hear it from below the car you can nearly feel the rattle coming from right before the Y/H/X setup. Seems that exhausts that have resonators right before that point in the system have MUCH less rasp than anyone else. Also, and I'm not sure how true it is but I heard "true duals" that have no connection to each other have no hiss, but I cannot confirm this.

Tony - After all the exhaust issues i've gone threw etc etc I may cave in and order a system from you after the SC install. Most likely 18"/CF - I really love the sound your system gives out. Good work, top notch!

F.I. Inc. · 04-20-2010, 05:56 PM

Quote:

Originally Posted by DannyGT

Tony - After all the exhaust issues i've gone threw etc etc I may cave in and order a system from you after the SC install. Most likely 18"/CF - I really love the sound your system gives out. Good work, top notch!

If and when you are ready, call me...

Tony

semtex · 04-20-2010, 08:50 PM

My install has turned into a total, epic disaster. We started at 9am this morning. It is now almost 10pm and we have quit for the night. We have the driver's side done but we cannot get the passenger side header off. The problem? Just one single nut -- the bottom center one, won't break loose, and now the nut has rounded and we're f*cked. This is a f-ing nightmare. I'm going to bed.

m4a1mustang · 04-20-2010, 08:54 PM

Quote:

Originally Posted by DannyGT

You dont have a leak. The hiss/rattle/metalic flutter on these cars once you go test pipes + exhaust is, IMO, horrible. The LTH's are amazingly gorgeous pieces. The fact they're being made by F.I. is an honor as their work is proven perfection. Only problem I see with them is they magnify that test pipe rasp 2x. Maybe they made a way to make the rasp sound good, ie; rattlesnake

My opinion on the rasp is, its harmonic. It seems when you hear it from below the car you can nearly feel the rattle coming from right before the Y/H/X setup. Seems that exhausts that have resonators right before that point in the system have MUCH less rasp than anyone else. Also, and I'm not sure how true it is but I heard "true duals" that have no connection to each other have no hiss, but I cannot confirm this.

Tony - After all the exhaust issues i've gone threw etc etc I may cave in and order a system from you after the SC install. Most likely 18"/CF - I really love the sound your system gives out. Good work, top notch!

You're right... drove a friend's Z with HFCs and one of the true dual CBEs and no hiss at all.

m4a1mustang · 04-20-2010, 08:54 PM

Quote:

Originally Posted by semtex

My install has turned into a total, epic disaster. We started at 9am this morning. It is now almost 10pm and we have quit for the night. We have the driver's side done but we cannot get the passenger side header off. The problem? Just one single nut -- the bottom center one, won't break loose, and now the nut has rounded and we're f*cked. This is a f-ing nightmare. I'm going to bed.

Yikes... good luck getting that sorted.

DannyGT · 04-20-2010, 09:10 PM

Quote:

Originally Posted by semtex

My install has turned into a total, epic disaster. We started at 9am this morning. It is now almost 10pm and we have quit for the night. We have the driver's side done but we cannot get the passenger side header off. The problem? Just one single nut -- the bottom center one, won't break loose, and now the nut has rounded and we're f*cked. This is a f-ing nightmare. I'm going to bed.

Damn. Sometimes walking away is the best thing. Good night and good luck tomorrow!

cubarican84 · 04-20-2010, 09:25 PM

Keep your head up brother. It will all be worth it when the job gets done. A new day awaits u tomorrow. I cant wait for your review

Daishi · 04-20-2010, 10:00 PM

Quote:

Originally Posted by F.I. Inc.

I have heard other systems on this car that used H Pipes. They had the hissing noise as well. I can even hear it with the stock exhaust, no X pipe there! The X pipe we use on the 350Z will limit your power and that is not we want to do. That is a step in the wrong direction. If the X is the issue which I think it is not, then I myself would live with it for the performance trade off.

BTW, did you get your care package, what do you think?

Thanks, Tony

lol yup got my care package. looks great just have to find some time to install these.. I already did the x pipe myself thats easy.. as far as the headers do you absolutely have to disconnect the steering knuckle.. if i remember correctly your test pipe install said to do the same thing but i got it done without disconnecting it..

BOLIO 671 · 04-20-2010, 10:15 PM

Quote:

Originally Posted by semtex

My install has turned into a total, epic disaster. We started at 9am this morning. It is now almost 10pm and we have quit for the night. We have the driver's side done but we cannot get the passenger side header off. The problem? Just one single nut -- the bottom center one, won't break loose, and now the nut has rounded and we're f*cked. This is a f-ing nightmare. I'm going to bed.

DAM!!! I FEEL FOR YA!!!!

abakja1 · 04-20-2010, 11:43 PM

me too,...
I got that stripped driver side bolt and I quit and havent installed it yet the FI HFC...
Actually been working more on my friend's subaru lgt upipe install, my 6 pot front brembos, rear pads, etc etc,...

HFC still sitting in the box... Get some rest,..look into a bolt extractor and give it another shot,....satisfaction comes from hard work.....

HGonzales,..who did the install? Just curious?

nixxer · 04-21-2010, 12:02 AM

Dyno posted on first post. Take it for what it is.
As for my installer, Seth @ Sonic Motorsports handled it, and didn't round any bolts and was prepared for my cat bolts. He's worked on alot of HRs and is also a Cobb AP pro tuner. Great guy and seemed to know his way around my engine as if it were his own. I'll go there again if there's anything I'm not confident enough to handle myself.

Daishi · 04-21-2010, 07:20 AM

You gonna give the car some time to learn then re dyno?

Chris@FsP · 04-21-2010, 08:27 AM

The ecu only 'learns' in closed-loop mode, which is only used for idle/low load/cruise conditions. During acceleration, deceleration, and WOT (wide open throttle), the ecu relies on its pre-programmed fuel and ignition tables. That's why products like Osiris and Accessport exist, to reprogram what the ecu does at WOT.

04-20-2010, 04:30 PM	#32 (permalink)
shumby Captin Canuck Join Date: Dec 2008 Location: with your mom Age: 44 Posts: 6,288 Drives: your sister Rep Power: 236	^^^^ gtfo __________________ Originally Posted by SAM@GTM Engine detonation is not normal and it should never never happen, and whoever told that need to do something else for living . Sam

04-20-2010, 04:32 PM	#33 (permalink)
DannyGT Track Member Join Date: Jan 2009 Location: Jersey Posts: 919 Drives: 370Z (SOLD) Rep Power: 279	You dont have a leak. The hiss/rattle/metalic flutter on these cars once you go test pipes + exhaust is, IMO, horrible. The LTH's are amazingly gorgeous pieces. The fact they're being made by F.I. is an honor as their work is proven perfection. Only problem I see with them is they magnify that test pipe rasp 2x. Maybe they made a way to make the rasp sound good, ie; rattlesnake My opinion on the rasp is, its harmonic. It seems when you hear it from below the car you can nearly feel the rattle coming from right before the Y/H/X setup. Seems that exhausts that have resonators right before that point in the system have MUCH less rasp than anyone else. Also, and I'm not sure how true it is but I heard "true duals" that have no connection to each other have no hiss, but I cannot confirm this. Tony - After all the exhaust issues i've gone threw etc etc I may cave in and order a system from you after the SC install. Most likely 18"/CF - I really love the sound your system gives out. Good work, top notch! __________________ Performance GTM Stage 1 SC, GTM Res.Test Pipes, Invidia Gemini Exhaust, GTM HD Oil Cooler Wheels & Suspension AME Tracer TM02's 19x9.5F 19x10.5R w/ 265x35F & 305x30R, Hotchkis Sways, BC (BR) Racing Coilovers (Car Sold) Last edited by DannyGT; 04-20-2010 at 04:40 PM.

04-20-2010, 08:50 PM	#35 (permalink)
semtex A True Z Fanatic Join Date: Jan 2009 Location: Behind enemy lines Age: 53 Posts: 5,995 Drives: People to drink Rep Power: 32	My install has turned into a total, epic disaster. We started at 9am this morning. It is now almost 10pm and we have quit for the night. We have the driver's side done but we cannot get the passenger side header off. The problem? Just one single nut -- the bottom center one, won't break loose, and now the nut has rounded and we're f*cked. This is a f-ing nightmare. I'm going to bed. __________________ "There are no small accidents on this circuit." -- Ayrton Senna 316.8whp & 248 ft/lbs (Dyno Dynamics) \| 319whp & 256 ft/lbs (DynoJet) (04/23/10) Stillen G3 CAI, CBE, Pulley / F.I. LTH / GTSpec Ladder Brace / Setrab Oil Cooler / UpRev-tuned by Forged Perf.

04-20-2010, 11:43 PM	#42 (permalink)
abakja1 Enthusiast Member Join Date: Sep 2009 Location: Hawaii Posts: 351 Drives: STI, MDX, Titan Rep Power: 304	me too,... I got that stripped driver side bolt and I quit and havent installed it yet the FI HFC... Actually been working more on my friend's subaru lgt upipe install, my 6 pot front brembos, rear pads, etc etc,... HFC still sitting in the box... Get some rest,..look into a bolt extractor and give it another shot,....satisfaction comes from hard work..... HGonzales,..who did the install? Just curious? __________________ 2009 370z PG MODS: 19x9.5 & 19x10.5 Volk GTS Injen CAI, 5k HIDs, FI CF Catback, FI Hi-Flow Cat, Clazzio. Links: CLAZZIO, HID CHANGE Volk GTS Rims, Brembo

04-21-2010, 12:02 AM	#43 (permalink)
nixxer Base Member Join Date: Jul 2009 Location: Hawaii Posts: 163 Drives: Black 370z 6MT Sp/T Rep Power: 15	Dyno posted on first post. Take it for what it is. As for my installer, Seth @ Sonic Motorsports handled it, and didn't round any bolts and was prepared for my cat bolts. He's worked on alot of HRs and is also a Cobb AP pro tuner. Great guy and seemed to know his way around my engine as if it were his own. I'll go there again if there's anything I'm not confident enough to handle myself. __________________ FI TDX 12" \| FI LTH \| Injen CAI \| UpRev \| Tuned by AMS www.project-definition.com

04-20-2010, 04:20 PM	#31 (permalink)
jpit Enthusiast Member Join Date: Feb 2009 Location: Washington State Posts: 440 Drives: 370Z Tour MT w/Spt Rep Power: 16	Maybe the hiss is the pounds and pounds of carbon monoxide and NOX that the car is emitting now that the cats are off.

04-20-2010, 09:25 PM	#39 (permalink)
cubarican84 Base Member Join Date: Aug 2009 Location: Tomah, WI Posts: 233 Drives: 2009 Nissan 370z Rep Power: 15	Keep your head up brother. It will all be worth it when the job gets done. A new day awaits u tomorrow. I cant wait for your review

04-21-2010, 07:20 AM	#44 (permalink)
Daishi Track Member Join Date: Jul 2009 Location: NJ Posts: 683 Drives: 09 370z 6Speed Rep Power: 16	You gonna give the car some time to learn then re dyno?

04-21-2010, 08:27 AM	#45 (permalink)
Chris@FsP Enthusiast Member Join Date: Dec 2009 Location: Tulsa, OK Posts: 430 Drives: 2008 350Z TT Rep Power: 368	The ecu only 'learns' in closed-loop mode, which is only used for idle/low load/cruise conditions. During acceleration, deceleration, and WOT (wide open throttle), the ecu relies on its pre-programmed fuel and ignition tables. That's why products like Osiris and Accessport exist, to reprogram what the ecu does at WOT.

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