Flowmaster and Y-pipe with crossover tube
Thread Starter
Racer
Joined: Apr 2003
Posts: 365
Likes: 0
From: Cupertino in Northern California
Flowmaster and Y-pipe with crossover tube
I have a 90 coupe with 10k original. I am thinking about installing
flowmasters. Anyone have flowmasters installed. Is the tune too loud ?
I have a 92 Z28 with an L98 and the flowmasters give it a nice
throaty sound.
Also, I am thinking about installling the y pipe with crossover tube to eliminate the rpm reasonance. Has anyone installed this hardware ?
Does it perform as advertised ?
Should I only install one or the other ?
Thanks in advance.
Ken
(Cupertino - just west of San Jose)
:seeya
[Modified by 90coupewithlowmiles, 4:42 PM 2/1/2004]
flowmasters. Anyone have flowmasters installed. Is the tune too loud ?
I have a 92 Z28 with an L98 and the flowmasters give it a nice
throaty sound.
Also, I am thinking about installling the y pipe with crossover tube to eliminate the rpm reasonance. Has anyone installed this hardware ?
Does it perform as advertised ?
Should I only install one or the other ?
Thanks in advance.
Ken
(Cupertino - just west of San Jose)
:seeya
[Modified by 90coupewithlowmiles, 4:42 PM 2/1/2004]
Drifting
Joined: Jan 2002
Posts: 1,606
Likes: 1
From: Las Cruces NM
Re: Flowmaster and Y-pipe with crossover tube (90coupewithlowmiles)
The flowmaster system for the L98 C4's use 3 chamber mufflers, so the exhaust isn't real loud unless your getting on it. The flowmaster on your Z28 is probably a 2 chamber and quite a bit louder. I had a 2 chamber on my LT1 T/A and it was quite a bit louder, but the difference was more defined at lower throttle imputs than at wot.
I don't know about the crossover tube, if it would help.
Chris
I don't know about the crossover tube, if it would help.
Chris
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: Flowmaster and Y-pipe with crossover tube (90coupewithlowmiles)
The FlowMasters are well known for their loudness & resonance on a C4; don't know if the cross-over pipe will reduce resonance but you could try it both ways. Anyway, with stock headers, front Y and cat it be somewat subdued.
I have the TPIS FlowMaster cat-back behind stock headers, custom front Y and RT hi-flow cat. There is some resonance in the 1,200-1,800rpm range at light throttle. However she does roar when you go to WOT and I just love it.
I have the TPIS FlowMaster cat-back behind stock headers, custom front Y and RT hi-flow cat. There is some resonance in the 1,200-1,800rpm range at light throttle. However she does roar when you go to WOT and I just love it.
Thread Starter
Racer
Joined: Apr 2003
Posts: 365
Likes: 0
From: Cupertino in Northern California
Re: Flowmaster and Y-pipe with crossover tube (65Z01)
Thanks for the input. The advertisement in Eckler's indicates
that the Y with cross tube will reduce the resonance. Just thought
I would put out a feeler. I will call Eckler's tech department to
verify whether the Y with cross and flowmasters is a good performing
combo.
:seeya
that the Y with cross tube will reduce the resonance. Just thought
I would put out a feeler. I will call Eckler's tech department to
verify whether the Y with cross and flowmasters is a good performing
combo.
:seeya
Safety Car
Joined: May 2003
Posts: 4,283
Likes: 0
From: Houston Texas
Re: Flowmaster and Y-pipe with crossover tube (90coupewithlowmiles)
I used the y-pipe with crossover with Dynomax mufflers. Didn't notice much difference. I had a muffler fall of my 89 due to a rusted y-pipe. The car without the muffler was not very much louder. I still had the two precats up front and stock single in the middle. You could probably go with muffler elims and still not be loud.
Racer
Joined: Sep 2002
Posts: 270
Likes: 1
From: Torrance California
Re: Flowmaster and Y-pipe with crossover tube (90coupewithlowmiles)
It is funny you ask...I just did that set up....I dont like it at all way to much resonance at low speed. :crazy: If it wasnt for that it would be nice. But I do a lot of L.A. city driving (stop and go) so it SUCKS!
I had the guy weld some sweet tips on the back. But I would like to sell them and get something else. Talking about a waste of money :cry
I never heard a vett without the rear Y cross pipe so I could'nt tell you how much it helped on the resonance. But in my opinion, I did'nt help at all.
[Modified by 1SLO POK, 4:51 AM 2/2/2004]
I had the guy weld some sweet tips on the back. But I would like to sell them and get something else. Talking about a waste of money :cry
I never heard a vett without the rear Y cross pipe so I could'nt tell you how much it helped on the resonance. But in my opinion, I did'nt help at all.
[Modified by 1SLO POK, 4:51 AM 2/2/2004]
Racer
Joined: Dec 2003
Posts: 345
Likes: 0
From: Rochester NH
Re: Flowmaster and Y-pipe with crossover tube (90coupewithlowmiles)
I have a 90 with the flowmasters. Between 1500-2000 rpms (or around 70 mph) the resonance is deafening. But when it gets to be too much I just shift into 5th and it all goes away. You can not hear the person next to you unless they are yelling. I am not sure if the crossover pipe will help, but the flowmasters are loud at cruising speed in 6th gear.
Definitely a good "seat of the pants" improvement. Not sure how many horses gained.
Definitely a good "seat of the pants" improvement. Not sure how many horses gained.
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Thread Starter
Racer
Joined: Apr 2003
Posts: 365
Likes: 0
From: Cupertino in Northern California
Re: Flowmaster and Y-pipe with crossover tube (1SLO POK)
Thanks for the valuable input. My main objective was to eliminate the
resonance with the stock Y. Eckler's advertises the Y with cross-over
to eliminate the resonance. From the replies to this point I should probably
just leave the stock Y as is.
Of course I have another option which is to leave my 90 L98 in the
garage and take out the 90 Zr-1 (4k original) more often......lol
Still waving in Cupertino/San Jose
:seeya
resonance with the stock Y. Eckler's advertises the Y with cross-over
to eliminate the resonance. From the replies to this point I should probably
just leave the stock Y as is.
Of course I have another option which is to leave my 90 L98 in the
garage and take out the 90 Zr-1 (4k original) more often......lol
Still waving in Cupertino/San Jose
:seeya
