If you have Test Pipes/High Flow Cats installed please post the following:

1. What kind you have and your gerneral opinions. Likes and dislikes
2. Gains if Dyno'd (only before and after if you have them) Please no but dyno's
3. Sound description (please be specific on this one and PLEASE PLEASE say if there is any raspiness whatsoever.
4. Price


PLEASE ONLY POST IF YOU HAVE TEST PIPES/HIGH FLOW CATS!

...and please refrain from the popular "use search" reply. I want a side by side comparison with nothing but facts and opinions for all test pipes/HFC's.

 

So heres mine:

1. LSD Testpipes. I Like them. Believe their the biggest bang for the buck..Not too keen on the raspiness tho.
2. 5HP gain did a before and after all within 2 hours. This was done bone stock
3. everything is much louder but not too loud. They do have loud raspiness between 3200 and 4000rpm's. This is my biggest gripe.
4. $220

 

Please keep in mind that ALL test pipes are going to create as raspy noise. ANY car that has the cats removed (except possibly some turbo cars) are going to rasp. LBMS test pipes have resonators built in to help tone it down some. Basically, rasp is not a useful means of measurement between test pipe brands as they all will do it.

I will say that I bought LSDUnique's pipes (Kinetix). Great experience with them, great quality pipes. My only recommendation is to buy the pipes with the lowest price. After all, they are only a little bent tubing and all perform the same function.

 

1. LSD Unique's Test Pipes. I love them and believe they offer great gains, one of those always tried & tested mods. Very professional looking pipes, as well as the customer service from LSD is definately top notch in my experience dealing with the individual.

2. No before dyno before I dyno'ed with my mods.

3. Awsome sound when you lay into the throttle, as I've been described it's loud but not a ricey loud. A powerful exotic loud. (told by many bystanders and street racers)
Borla Dual IS RASPY. I get the raspyness from 3-3.8k (both under load & free-reveing), then it STOPS, that's going to be an always. My borla dual exhaust is also rattling like no other which I can forsee maybe being dependant on the pipes high flow which has over time shaken em up a bit. But that's nothing some simply work can get rid of.

*Note I also have Nismo headers which alone raised the sound levels a little bit too along with flow (so more potential for raspyness in the baffles).

4. $250 for polished pipes

----[PERSONAL INSIGHT]----

I originally played around with removing the muffler entirely and going with a y-pipe (resonator left on) and it sounded ****ING AMAZING! It was a mean loud and it let people knew that the car meant business. I loved the sound of de-accelerating and hearing the mean burble of the big block v8's sounds only it was a Z! It was incredible. Everyone that heard it loved it, and it turned SOOOO many heads. I never got one bad complaint about it. The car was civilized when you were cruising around but, punch it and it would roar, and then de-celerate and it would give off sweet muscle car burble's remensient of radical cams. No Joke

Then I went open headers which was TOO DAMN LOUD it sounded exactly like an indy car.

Now I am with the borla which does sound incredibly bassy down low and exotic muscley loud up high. But the always present raspiness inbetween the two.

I'm going a different route once I go FI as I want that mean aggressive loud back rather than this. But one thing to note en fin is that the gas mileage really really takes a hit. Punch it now with no cats and you can damn near literally watch your gas gauge start to go down. Expect around 5-9mpg under full throttle if not worse, just a heads up

 

well...i dont have first hand experience..but im sure mcduck will reposnd to this thread soon...he and someone else say that the crawford high flow cats feel amazing and sound perfect...and if the test pipes have a drawback (sound) and the high flows fix that...then what does that give you ?

 

Use the search function............
















j/k!

1.) Kinetix Test Pipes, PROS: very noticable power gains CONS: raspiness
2.) No dynos
3.) Sounds very deep adn throaty when combined with the Borla.
4.) $220 shipped

 

I asked for it...

Any with High Flow Cats?

 

i got the crawford cats, and waiting for the borla headers will let you know how it sound when i get them installed
SHOULD BE SWEET!!!

 

let me know if you get any raspiness cause crawford claims that there is no raspiness but in their video i heard the raspiness.

 

I have LSD Pipes with a stock exhaust. There is a noticeable gain with the pipes. I plan to go back to the track to see if there is a difference in 1/4 mile and MPH.

There is a raspy sound that occurs around 3k rpms and ends about 4k. Really only when you push the gas down hard. It is bad when the engine is cold, but isn't really that bad after it warms up. Doesn't sound anything like a Honda, I know because I owned a Honda with high flow cat and Greddy Exhaust.

 

Random cats being installed in about 30 minutes.

 

1. LBMS test pipes/LBMS test pipes with resonator. There is a thread commenting on likes on dislikes.
2. There is a G35 dyno stock and modified exists that shows 7 hp for LBMS highflow cats and 12 hp for LBMS testpipes. There is no baseline followed by mod installed dyno for the LBMS testpipes with resonator yet.
3. Testpipes - definite raspiness. Testpipes with resonator sounds great. Only a rare hint of raspiness on WOT, not on all occasions and not like testpipe raspiness. The raspy sound is virtually eliminated.
4. I believe the Testpipes with resonators are $490.00.

If you want to avoid raspiness, I would suggest the following: LBMS highflow cat or Random cat or LBMS testpipe w/resonator.

 

I drove hfm's car with the resonated lbms pipes and borla dual ... no buzzing honda sounds at all. It was just an amplified borla tone which to me sounds nearly identical to the porsche 996 sport exhaust. Couldn't be more PERFECT!

 

1. Nissan gutted cats. Supreme fit and stealth appearance. The only downside is the exhaust smells like my ex-1966 Mustang GT.

2. No dyno, G-Tech Pro data.

3. Just like stock only a little louder. WOT is blissful; almost Ferrari like.

4. No raspiness whatsoever and no fart tip Honda bogging exhaust sound either. THe answer lies in that the gutted cats act as Helmholtz resonators using a reflective principle to deaden raspiness. A true advantage over a single diameter pipe, IMHO.
"On your typical cat-back exhaust system, you’ll see a couple of bulges in the piping that are apparently mini-mufflers out to help the big muffler that hangs out back. These are called Helmholtz Resonators and are very similar to glasspacks. The main difference is that firstly, there is no sound-absorbing fiberglass or steel wool in a Resonator. And secondly, their main method of silencing is the reflective principle, not absorption. An easy way to tell the difference between a glasspack and a true Helmholtz Resonator is to "ping" one with your finger. A glasspack will make a dull thud, and a true Resonator will make a clear "ping!" sound."

 

Got a link to the LBMS high flow Cats ? How much are they and where to get 'em ? How do they compare to the Crawford High Flows ?

Has anyone seen the Nismo high flows (yes I know they are pricey) ?

 

1. Random cats installed today. Only got to drive about 12 miles with them but DAMN!!! They are pretty loud at WOT but a VERY noticable bump in power when combined with my headers and exhaust.
2. No dynos yet- will try to get some dyno runs and soundclips after SEMA.
3. No raspiness at all- makes the already aggressive sounding Injen SES much more so.
4. $500.

 

gutted cats wont fool an emmisions sensor, atleast test pipes can be swapped back to real cats come emmision time...

why are the pipes with resonator so expensive? any chance of them coming down?

 

whats the difference between high flow and random cats?

 

Random cats are high flow cats- Just manufactured by Random Technologies.

 

whats a random technology??...are you too cool to give me the real name of the manufacturer??

























kk..just kidding...let us know if the random cats eliminate the raspy sound...also...i suggest that ppl with mods put it in their sig..so people get a better idea of what the persons talkin about when they make comments on mods (not directed only to u failsafe--btw..nice car)