R-V6 Pre Cat Delete Hissing noise?
#1
CL-SEXY SIX (=
Thread Starter
Join Date: Sep 2007
Location: Queens, NYC
Age: 35
Posts: 233
Likes: 0
Received 0 Likes
on
0 Posts
R-V6 Pre Cat Delete Hissing noise?
Just got the package today and installed it asap.
It wasn't as hard as i thought it would be...finished in less then an hour...
Everything fit perfectly, pipes were beautiful and no Engine lights.
All i am hearing is this hissing noise; is it normal for these pipes? All my bolts lined up and are snugged up tight...
Ideas? thanks!
It wasn't as hard as i thought it would be...finished in less then an hour...
Everything fit perfectly, pipes were beautiful and no Engine lights.
All i am hearing is this hissing noise; is it normal for these pipes? All my bolts lined up and are snugged up tight...
Ideas? thanks!
#2
Sandy Eggo
iTrader: (2)
Just got the package today and installed it asap.
It wasn't as hard as i thought it would be...finished in less then an hour...
Everything fit perfectly, pipes were beautiful and no Engine lights.
All i am hearing is this hissing noise; is it normal for these pipes? All my bolts lined up and are snugged up tight...
Ideas? thanks!
It wasn't as hard as i thought it would be...finished in less then an hour...
Everything fit perfectly, pipes were beautiful and no Engine lights.
All i am hearing is this hissing noise; is it normal for these pipes? All my bolts lined up and are snugged up tight...
Ideas? thanks!
Wierd
#5
94 DC4 RS LSV/Turbo
iTrader: (1)
Join Date: Jul 2007
Location: New York City | Stuck in Traffic
Age: 38
Posts: 11,734
Likes: 0
Received 11 Likes
on
11 Posts
did you install just the precat deletes... if you have a hissing sound check the flanges are even and linged up
the precat deletes no longer have flex section they are straight pipes...
which jpipe are you guys running? because thats the only flex section left... I installed a set of the revised precat deletes and defininitely heard nothing
the precat deletes no longer have flex section they are straight pipes...
which jpipe are you guys running? because thats the only flex section left... I installed a set of the revised precat deletes and defininitely heard nothing
Trending Topics
#9
Former Sponsor
Installed in less then an hour! How did you manage that. I would check everything over the new precat deletes have no flex pipe to hiss and jpipes have the update flex pipes. Which jpipe are you running, could it be rasp? Precat deletes have been known to cause rasp with after market exhaust.
#10
94 DC4 RS LSV/Turbo
iTrader: (1)
Join Date: Jul 2007
Location: New York City | Stuck in Traffic
Age: 38
Posts: 11,734
Likes: 0
Received 11 Likes
on
11 Posts
Wow, I guess I skipped that part where he said he installed it in under an hour
I don't believe em, the fastest I've ever installed them was 2hours flat (bforbrian's car)
It takes 1 hour just for the car to cool down
I don't believe em, the fastest I've ever installed them was 2hours flat (bforbrian's car)
It takes 1 hour just for the car to cool down
#11
CL-SEXY SIX (=
Thread Starter
Join Date: Sep 2007
Location: Queens, NYC
Age: 35
Posts: 233
Likes: 0
Received 0 Likes
on
0 Posts
The passenger fan takes what? 2 minutes to remove?
Front cat "4" 12 mm with a deep socket and a air ratchet? another 3 mins?
o2 sensor comes in what less then a minute with the right tools?
Rear sway bar comes out in 3 minutes; 3 10mms attached on; the 6 12mms for the towers...
then we have the 4 12s in the back which are just as easy...the o2 sensor maybe antoher 6 minutes...
Now the car is lifted up and the j-pipe is disconnected; 6 14mms that come out with an impact gun...how long does that take?
and the 3rd cat is disconnected another what? 2mins?
shields come out with a 1/4" air ratchet with a 10.. and the two coils in the rear...
All that was done in about 1/2...
install was even quicker...because of the slimness of the pipes.
I do cats on muranos in about an hour at work; where i have to take out the subframe and the cowl to take out the shields....\
And i just came back from work as well; car was only sitting for 10 mins...car does not have to be cooled down.
im sorry you can't do it in about an hour.
#13
94 DC4 RS LSV/Turbo
iTrader: (1)
Join Date: Jul 2007
Location: New York City | Stuck in Traffic
Age: 38
Posts: 11,734
Likes: 0
Received 11 Likes
on
11 Posts
please be kind please rewind... I see now...
I'd let'er cool down tho... burns ftl
well like you said you used impact... so could it be when you tightened the jpipe to the precat the flange shifted slightly, and you know first wide open run you go it causing a blown gasket
I say drop it, replace the gaskets with o2 sensor safe gasket maker then keep ur index finger near the 2 flanges to feel for a shift as you tighten...
I'd let'er cool down tho... burns ftl
well like you said you used impact... so could it be when you tightened the jpipe to the precat the flange shifted slightly, and you know first wide open run you go it causing a blown gasket
I say drop it, replace the gaskets with o2 sensor safe gasket maker then keep ur index finger near the 2 flanges to feel for a shift as you tighten...
Last edited by stillhere153; 02-08-2009 at 09:26 AM.
#16
CL-SEXY SIX (=
Thread Starter
Join Date: Sep 2007
Location: Queens, NYC
Age: 35
Posts: 233
Likes: 0
Received 0 Likes
on
0 Posts
#17
94 DC4 RS LSV/Turbo
iTrader: (1)
Join Date: Jul 2007
Location: New York City | Stuck in Traffic
Age: 38
Posts: 11,734
Likes: 0
Received 11 Likes
on
11 Posts
^ yes those very gaskets (precat to jpipe)... I am not saying they are cheap, I am not saying they are good... I am just saying that I ran into this problem and replaced it with rtv or rvt whatever the hell its called (as per richie's aim message to me when I inquired)
some make threads, others talk to richie.. i find talking to richie solves the problem quicker than making a thread
or you could get 2 sets of v-band clamps and do a little cut and weld ... but there aren't any tig welders in NY :'(
some make threads, others talk to richie.. i find talking to richie solves the problem quicker than making a thread
or you could get 2 sets of v-band clamps and do a little cut and weld ... but there aren't any tig welders in NY :'(
#18
The Kinetics of Bleu
iTrader: (4)
^ yes those very gaskets (precat to jpipe)... I am not saying they are cheap, I am not saying they are good... I am just saying that I ran into this problem and replaced it with rtv or rvt whatever the hell its called (as per richie's aim message to me when I inquired)
some make threads, others talk to richie.. i find talking to richie solves the problem quicker than making a thread
or you could get 2 sets of v-band clamps and do a little cut and weld ... but there aren't any tig welders in NY :'(
some make threads, others talk to richie.. i find talking to richie solves the problem quicker than making a thread
or you could get 2 sets of v-band clamps and do a little cut and weld ... but there aren't any tig welders in NY :'(
#19
Former Sponsor
I would make sure the flanges are lined up with the jpipe and gaskets have not been crushed. They are made of graphite which can be squeezed if over tightened. I checked and you only purchased deletes your last purchase. What jpipe are you running, if it is mine when did you get it?
#21
CL-SEXY SIX (=
Thread Starter
Join Date: Sep 2007
Location: Queens, NYC
Age: 35
Posts: 233
Likes: 0
Received 0 Likes
on
0 Posts
I would make sure the flanges are lined up with the jpipe and gaskets have not been crushed. They are made of graphite which can be squeezed if over tightened. I checked and you only purchased deletes your last purchase. What jpipe are you running, if it is mine when did you get it?
#22
94 DC4 RS LSV/Turbo
iTrader: (1)
Join Date: Jul 2007
Location: New York City | Stuck in Traffic
Age: 38
Posts: 11,734
Likes: 0
Received 11 Likes
on
11 Posts
I wont front i tighten them with the impact gun and then tap it 3 times afterward lol, but I do put my finger to make sure they are flush
I would believe not exceeding 50lbs is safe enough... although impact gun does what 100 lol
I would believe not exceeding 50lbs is safe enough... although impact gun does what 100 lol
#25
CL-SEXY SIX (=
Thread Starter
Join Date: Sep 2007
Location: Queens, NYC
Age: 35
Posts: 233
Likes: 0
Received 0 Likes
on
0 Posts
Feels like i lost some low end torque mayb the ecu is still learning
#28
CL-SEXY SIX (=
Thread Starter
Join Date: Sep 2007
Location: Queens, NYC
Age: 35
Posts: 233
Likes: 0
Received 0 Likes
on
0 Posts
#31
Sandy Eggo
iTrader: (2)
It doesnt really bother me, just kinda odd.. I only have like 75miles on my car since I reset ECU..
Although Ive been driving like a mad man for 75miles.. LOL
I wonder how long ECU takes to re-calibrate.. Also how much of a difference could it make?
#33
CL-SEXY SIX (=
Thread Starter
Join Date: Sep 2007
Location: Queens, NYC
Age: 35
Posts: 233
Likes: 0
Received 0 Likes
on
0 Posts
hissing occurs when im on the throttle; i reset the ECU and im driving like a mad man just like^^ lol...and i do have the stock exhaust back on. No one wants to buy my Xlr8 catback...i might just put it back on...lol
#34
practicing nihilist
just another Master Of The Obvious question, but is the hiss more like a whistle and happening between 2-3K rpms? If so, that's standard CAI whistle. Maybe it's exentuated with the exhaust mods.
#35
Safety Car
iTrader: (2)
no he's not talking about the intake whistle. its totally different hiss. precat deletes hisses like a exhaust leak when gas is given.
btw... op, i think what your hearing is the same hiss that i used to have. when precat deletes are pretty new, hiss is more noticeable and starts to tone down as carbon builds up in the pipe. eventually you'll get used to the hiss and will be less noticeable.
precat deletes starts to make more torque above 3k rpm, so if you mainly drive in the city, you'll feel less torque compared to stock. this was one of the main reason i switched back to stock cats for more torque below 3k.
#40
Thread resurrection!!
Got mine installed 2 weeks ago and same hissing noise upon acceleration. Thought it was exhaust leak and replaced gaskets but noise is still here?
Seems like it is common with the PCDs but any solutions found?
Got mine installed 2 weeks ago and same hissing noise upon acceleration. Thought it was exhaust leak and replaced gaskets but noise is still here?
Seems like it is common with the PCDs but any solutions found?