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-   -   Customizing FI catback (http://www.the370z.com/intake-exhaust/18555-customizing-fi-catback.html)

abakja1 05-02-2010 07:30 PM

Customizing FI catback
 
So I got my KW V3s installed and I cannot get up my driveway..

I kinda know that the rear cans hang a little low as the edge is the closest point to the ground. lowered 1" now I scrape and am going to adjust so my ride height is 1/2" higher..

I got a quote to install smaller cans with new flanges and 2 1/2" piping that are smaller and will have a flatter angle or have more clearance at the rear so I dont have to worry about scraping anywhere..

Anyone do this to their FI or can post up custom exhausts?

import111 05-02-2010 07:52 PM

I feel your pain. I am lowered 1.5 inches and I have the FI CBE with carbon fiber cans, and in 1 spot I have scraped so much that it has worn past the carbon fiber and quite a bit into the metal under it. I have debated what I will do when it scrapes enough away to give me a leak. I still don't know what I will do.

Viera 05-02-2010 08:11 PM

Well, this is kinda disheartening...

efuseakay 05-02-2010 09:31 PM

Just don't lower. It's only for looks anyway... and if you're tracking your car, get a beater for a daily driver. ;)

abakja1 05-02-2010 11:11 PM

Quote:

Originally Posted by efuseakay (Post 522489)
Just don't lower. It's only for looks anyway... and if you're tracking your car, get a beater for a daily driver. ;)

You're kidding me right? This car isn't for just show, but to be driven for the reason why I bought it for. If you are content as a daily driver, that's fine. I prefer to mod it to suit my tastes and that includes the suspension.

I'm lifting it 1/2" and installing smaller canisters.

kannibul 05-02-2010 11:49 PM

I mentioned this in the FI Catback thread - that perhaps the best option would be to cut part of the can and make a flat spot that is parallel to the ground.

Whip out the big disk grinder, grind off the lowest portion maybe .5" up then weld over a flat stainless steel piece that will fit the hole.

Then again, I don't know what the inside structure of the cans are, but, as an idea, it's flawless! :)

Or, worst cast, sell the FI catback and get something else.

efuseakay 05-02-2010 11:49 PM

Quote:

Originally Posted by abakja1 (Post 522603)
You're kidding me right? This car isn't for just show, but to be driven for the reason why I bought it for. If you are content as a daily driver, that's fine. I prefer to mod it to suit my tastes and that includes the suspension.

I'm lifting it 1/2" and installing smaller canisters.

See... you're already lifting it after having scraped up your FI cf mufflers. :)

kannibul 05-02-2010 11:52 PM

Quote:

Originally Posted by efuseakay (Post 522638)
See... you're already lifting it after having scraped up your FI cf mufflers. :)

Nothing wrong with people adjusting the car's ride height to match what they envision.

Ride height does impact performance as well as looks...

abakja1 05-03-2010 12:19 AM

Quote:

Originally Posted by efuseakay (Post 522638)
See... you're already lifting it after having scraped up your FI cf mufflers. :)

Tru dat, but only cause I would like this to be a dd as well. My mechanic took my request for aggressive sport setting to seriously:tiphat:

Hawaii roads aren't great, so that is why I wanted it .5 to 1 inch low,....but it's really my driveway and not the city streets for me raising it back up,..

NewYorkJon34 05-03-2010 12:23 AM

I just had my KWs installed too, as long as you only lower your car an inch you should be fine. I also have the F.I. 18" CF Exhaust

abakja1 05-03-2010 01:05 AM

According to my mechanic...it was only an inch... I dont everywhere,..its just my driveway if you look at how steep it is in my pics..

Its the one with the Nissan Titan parked at the top...

http://i44.tinypic.com/16b0ti1.jpg

Cyberium 05-03-2010 01:45 AM

Nice car man... sucks about the driveway tho... Whenever I plan on taking the 370z out for a ride, I have to plan my moves ahead of time and take different routes if I know there are some shady roads and driveways.

One of the downsides of having a sports car I suppose.

Gunzero 05-03-2010 10:03 AM

Mod your driveway to accommodate your Z.

209Z 05-03-2010 12:09 PM

Quote:

Originally Posted by gunzero (Post 522827)
mod your driveway to accommodate your z.

winnnnn!!!

abakja1 05-03-2010 02:30 PM

I was thinking that,..but it really is only at the juncture where the sidewalk to my driveway has this change in angle. Basically, the rear cans are dragging on the sidewalk, which I cannot alter or change as this belongs to the City and County of Hawaii.

I could get sued or taken to court if anyone got hurt or injured (ie handicap electric chair)..

m4a1mustang 05-03-2010 02:44 PM

I don't know why you'd even bother going with FI if you're just going to murder the mufflers.

The "best" solution if you have to modify the system would be to mount the existing cans horizontally in the factory muffler location and fab some new pipes. This will obviously change the sound a bit and might hurt performance, but it would at least salvage most of the system.

I would give Tony a call and see what he thinks your best option is.

Gunzero 05-03-2010 03:51 PM

Quote:

Originally Posted by abakja1 (Post 523126)
I was thinking that,..but it really is only at the juncture where the sidewalk to my driveway has this change in angle. Basically, the rear cans are dragging on the sidewalk, which I cannot alter or change as this belongs to the City and County of Hawaii.

I could get sued or taken to court if anyone got hurt or injured (ie handicap electric chair)..

Hahaha :D well lemme think of something.

Here you go.
http://i188.photobucket.com/albums/z...19/16b0ti1.jpg

Cyberium 05-03-2010 11:05 PM

That would be a steep *** drop for the titan lol

Gunzero 05-03-2010 11:41 PM

Ahhhh xD He can plow through the neighbor's yard.

abakja1 05-04-2010 02:30 AM

Quote:

Originally Posted by m4a1mustang (Post 523142)
I don't know why you'd even bother going with FI if you're just going to murder the mufflers.

The "best" solution if you have to modify the system would be to mount the existing cans horizontally in the factory muffler location and fab some new pipes. This will obviously change the sound a bit and might hurt performance, but it would at least salvage most of the system.

I would give Tony a call and see what he thinks your best option is.

Actually, Im keeping the FI muffler pieces in tact.
Muffler shop is going to make new flanges and pipes to their own cannisters similiar to the layout of the FI system. It will offer better clearance due to it being smaller cannisters and being welded/made at a different angle. That way I can always bolt the FI piece or sell as a set if I ever decide to.

The shop Im going to does great work as they make custom TI catbacks for cars with clean welds,...I thought I give them a try since I used to get my Subaru Legacy GT dyno tuned there a few times...

m4a1mustang 05-04-2010 05:17 AM

Quote:

Originally Posted by abakja1 (Post 524073)
Actually, Im keeping the FI muffler pieces in tact.
Muffler shop is going to make new flanges and pipes to their own cannisters similiar to the layout of the FI system. It will offer better clearance due to it being smaller cannisters and being welded/made at a different angle. That way I can always bolt the FI piece or sell as a set if I ever decide to.

The shop Im going to does great work as they make custom TI catbacks for cars with clean welds,...I thought I give them a try since I used to get my Subaru Legacy GT dyno tuned there a few times...

Well, like I was saying, that kind of defeats the purpose of FI as it's going to totally change the sound.

Anyways, post up some vids of the new custom setup so we can hear it. :tup:

abakja1 05-04-2010 09:49 PM

just gotta do what it takes...
Its not like Im going to die if it changes the sound as doing somethingg like installing my Hi Flow cats will change the sound as well..so,...no big deal on sound change...

As long as performance is the same or better is what matters, especially if this means being a viable DD and that there will be no damage to the car...Im going to dyno tune later if COBB comes out with something or do an UpRev dyno tune..I have several places/people in mind right now..

What is the use of keeping the sound intact if your FI mufflers are hanging or left for dead in the middle of the road? :eek:

m4a1mustang 05-04-2010 10:20 PM

Well, what I really meant by keeping the sound in tact is reusing the FI mufflers. By going with an unknown you run the risk of your car sounding like crap.

abakja1 05-08-2010 11:22 AM

Not sure if putting a more free flowing exhaust can make it sound worse. It will sound different, but sTill sound Good. I had the heiGhT adjusted so I won't be changinG The cans,...if anythinG, I'll mY pick up a different exhaust if a good deal comes around.

Amuse or Ti type exhaust comes to mind,..

Zsteve 05-08-2010 03:44 PM

Quote:

Originally Posted by abakja1 (Post 529588)
Not sure if putting a more free flowing exhaust can make it sound worse. It will sound different, but sTill sound Good. I had the heiGhT adjusted so I won't be changinG The cans,...if anythinG, I'll mY pick up a different exhaust if a good deal comes around.

Amuse or Ti type exhaust comes to mind,..

TGTGGY was wondering if you were trying to spell something crypticly.

Danny3.7 05-08-2010 10:13 PM

any chance it would clear by going up (or down) the driveway at an angle?

abakja1 05-09-2010 02:05 AM

Quote:

Originally Posted by Zsteve (Post 529762)
TGTGGY was wondering if you were trying to spell something crypticly.

lol,...nah,..just browsing and was typing using my new iPad....
for some reason it was using Alphas on certain letters...

And going at an angle would help, but my driveway isnt that wide...I got it all fixed tho as ride height was adjust so it wasnt slammed...I also just lowered the front 1/4" as its only the rear that had the driveway problem...

Demon Z 05-10-2010 04:11 PM

I'd just love to be in Hawaii...until I had to buy something. :D


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