Fast Intentions Long Tube Headers are here!

chuckd05 · 09-15-2011, 03:02 AM

Quote:

Originally Posted by NYBladeZ

Best exhaust mod I have on here thus far. Doesn't throw a check engine light and I recently passed inspection in New York, of course they didn't look under. I have the distinction of being the loudest car in NY short of those running open dumps.

Who runs open header? That would get old real quick!

G37Sam · 10-14-2011, 04:50 PM

Quote:

Originally Posted by NYBladeZ

Best exhaust mod I have on here thus far. Doesn't throw a check engine light and I recently passed inspection in New York, of course they didn't look under. I have the distinction of being the loudest car in NY short of those running open dumps.

Video please?

babbagandu · 10-14-2011, 10:59 AM

bumping this thread.

Just saw another thread where someone was asking about putting in the FI LTH with the Motordyne XYZ pipe that comes with a cat.

Was wondering if anyone has done this. How much of the gains from the LTH would be diminished by adding a cat to the system?

babbagandu · 10-15-2011, 10:08 AM

Quote:

Originally Posted by babbagandu

bumping this thread.

Just saw another thread where someone was asking about putting in the FI LTH with the Motordyne XYZ pipe that comes with a cat.

Was wondering if anyone has done this. How much of the gains from the LTH would be diminished by adding a cat to the system?

bumping my question. yes inpatient

SS_Firehawk · 10-15-2011, 11:24 AM

Quote:

Originally Posted by babbagandu

bumping this thread.

Just saw another thread where someone was asking about putting in the FI LTH with the Motordyne XYZ pipe that comes with a cat.

Was wondering if anyone has done this. How much of the gains from the LTH would be diminished by adding a cat to the system?

It may have been my thread from a couple day's ago. Every time ask that question I always get a reply with "Can't be done, LTH replace the cats" and I'm thinking to myself... "I wouldn't have asked the question if I had not found the solution and PRESENTED it very articulate english...

When I get back from my tour, I'm slapping those bad boy's on.... or someone else. Demon bolt sounds terrifying.

babbagandu · 10-15-2011, 12:41 PM

Quote:

Originally Posted by SS_Firehawk

It may have been my thread from a couple day's ago. Every time ask that question I always get a reply with "Can't be done, LTH replace the cats" and I'm thinking to myself... "I wouldn't have asked the question if I had not found the solution and PRESENTED it very articulate english...

When I get back from my tour, I'm slapping those bad boy's on.... or someone else. Demon bolt sounds terrifying.

lol yeah it was your thread I was referring to. And yeah I noticed the first couple posters said exactly that: you can't get LTH with hfc blah blah blah. Lots of people are lacking in the reading comprehension department unfortunately

Let me know how it works out once you get everything installed. I may even get it done before you lol, just gonna wait and see if that new motordyne exhaust with the cat comes out soon. But I have also been looking for a nice y-pipe back exhaust to complete the set up if I end up going with the LTH and motordyne XYZ pipe. but the only nice one I have seen so far is that titanium amuse one which costs like $3k

SS_Firehawk · 10-15-2011, 07:35 PM

Yeah, you just might haha. I could easily buy it if I were not funding the wedding. Once I know I'm in the clear and I'm back home, I'll be putting those on order and greasing up those bolts and especially that demon bolt. I'll probably get a base dyno done before install, then dyno after install, maybe give her a few weeks. I'm thinking I may need to get the ecu tuned as well with the changes.

jnaut · 10-15-2011, 08:03 PM

Quote:

Originally Posted by SS_Firehawk

Yeah, you just might haha. I could easily buy it if I were not funding the wedding. Once I know I'm in the clear and I'm back home, I'll be putting those on order and greasing up those bolts and especially that demon bolt. I'll probably get a base dyno done before install, then dyno after install, maybe give her a few weeks. I'm thinking I may need to get the ecu tuned as well with the changes.

just for some good news, you have have to mess with this " demon bolts" if you doing LTH's as you pull the factory manifolds and cats out coupled together.

babbagandu · 10-18-2011, 06:28 PM

Quote:

Originally Posted by babbagandu

bumping this thread.

Just saw another thread where someone was asking about putting in the FI LTH with the Motordyne XYZ pipe that comes with a cat.

Was wondering if anyone has done this. How much of the gains from the LTH would be diminished by adding a cat to the system?

bumping question again... would really like to see if anyone has done this yet

XwChriswX · 10-18-2011, 06:32 PM

Quote:

Originally Posted by babbagandu

bumping question again... would really like to see if anyone has done this yet

It will prolly be just as if you didn't even have it installed, since you're just relocating the same restriction. I really hope you don't spend the money for headers just to negate their purpose with a Cat in your exhaust.

SS_Firehawk · 10-18-2011, 06:50 PM

That doesn't make sense to me. You are still improving exhaust flow regardless. I can almost guarantee that a LTH with HFC will outflow testpipes and HFC because it is leaving the headers more efficiently. Granted the difference may be academic, but they will always come out on top.

XwChriswX · 10-18-2011, 06:54 PM

Quote:

Originally Posted by SS_Firehawk

That doesn't make sense to me. You are still improving exhaust flow regardless. I can almost guarantee that a LTH with HFC will outflow testpipes and HFC because it is leaving the headers more efficiently. Granted the difference may be academic, but they will always come out on top.

Ok, so you're looking at spending $1500~ for 3-5 extra hp over a HFC setup?

If you're talking about doing that, save yourself some $$$ and get the Stillen headers and HFC's...

babbagandu · 10-18-2011, 08:21 PM

Quote:

Originally Posted by XwChriswX

It will prolly be just as if you didn't even have it installed, since you're just relocating the same restriction. I really hope you don't spend the money for headers just to negate their purpose with a Cat in your exhaust.

Do you really think a single high flow cat would completely negate the gain from the LTH? Maybe I am wrong but it looks like the LTH increase power substantially throughout the whole power range. How much would the cat on the XYZ pipe restrict air flow that it would cancel out the LTH completely?

XwChriswX · 10-18-2011, 08:36 PM

Quote:

Originally Posted by babbagandu

Do you really think a single high flow cat would completely negate the gain from the LTH? Maybe I am wrong but it looks like the LTH increase power substantially throughout the whole power range. How much would the cat on the XYZ pipe restrict air flow that it would cancel out the LTH completely?

The same reason there are 2 cats on the Z already... You're asking all of that exhaust to go through 1 cat. Unless you're talking a 3" pipe back... You're going to have a lot of restriction at the cat entry point. And that backfill will prevent flow... and thus, neutralize power. That's great that you get it out of the engine efficiently, but it's just like on the highway asking all of that to go to 1 cat. Back up is inevitable.

Kingbaby · 10-15-2011, 02:24 AM

so tempted to buy used and place these on a 350...

10-15-2011, 07:35 PM	#7 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	Yeah, you just might haha. I could easily buy it if I were not funding the wedding. Once I know I'm in the clear and I'm back home, I'll be putting those on order and greasing up those bolts and especially that demon bolt. I'll probably get a base dyno done before install, then dyno after install, maybe give her a few weeks. I'm thinking I may need to get the ecu tuned as well with the changes. __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction

10-18-2011, 06:50 PM	#11 (permalink)
SS_Firehawk Premium Member Join Date: Oct 2011 Location: Tampa Posts: 4,142 Drives: 13' Magma Red Nismo Rep Power: 7335	That doesn't make sense to me. You are still improving exhaust flow regardless. I can almost guarantee that a LTH with HFC will outflow testpipes and HFC because it is leaving the headers more efficiently. Granted the difference may be academic, but they will always come out on top. __________________ Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI New Car: Under Construction

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10-14-2011, 10:59 AM	#3 (permalink)
babbagandu Enthusiast Member Join Date: Mar 2011 Location: US Posts: 349 Drives: 09 Nismo Rep Power: 15	bumping this thread. Just saw another thread where someone was asking about putting in the FI LTH with the Motordyne XYZ pipe that comes with a cat. Was wondering if anyone has done this. How much of the gains from the LTH would be diminished by adding a cat to the system?