[kwav8r]

Has anyone installed a Borla 60608 Resonator on a ZL1? If so were there any fitment issues? Having installed the 60606, I know there isn't a bunch of room to play with as I had to adjust the mid pipe to keep from coming into contact with a tunnel brace.

I know someone else on this forum installed one on an 6 Gen SS but I'm just not sure if there is a major underbody difference between an SS and ZL1.

[Jhunsberger]

Perhaps I am the SS guy you are referring to, here are pics of the 60608 resonator installed on my SS, with the 60606 and ATAK system, also using the NEP cat delete pipes.

Although not the best pics of the actual 60608, but you get the idea.

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[bomariam1]

Originally Posted by kwav8r

Has anyone installed a Borla 60608 Resonator on a ZL1? If so were there any fitment issues? Having installed the 60606, I know there isn't a bunch of room to play with as I had to adjust the mid pipe to keep from coming into contact with a tunnel brace.

I know someone else on this forum installed one on an 6 Gen SS but I'm just not sure if there is a major underbody difference between an SS and ZL1.

ZL1 has a different part number.
140726 for Atak
140727 for S-type

Sent from my SM-N950F using Tapatalk

[Chris Edwards]

Originally Posted by Jhunsberger

Perhaps I am the SS guy you are referring to, here are pics of the 60608 resonator installed on my SS, with the 60606 and ATAK system, also using the NEP cat delete pipes.

Although not the best pics of the actual 60608, but you get the idea.

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Did you try the cat delete before you added the restonators? How much difference did the resonators make? Can't imagine they would quiet things down much being so small.

[Jhunsberger]

Originally Posted by Chris Edwards

Did you try the cat delete before you added the restonators? How much difference did the resonators make? Can't imagine they would quiet things down much being so small.

Did the cat delete pipes 1st, and it was so loud and raspy, I did not like it at all. Then that led me to do the cat back Borla ATAK set-up. I believe the resonator helped with the raspiness, perhaps the mufflers help too. Borla said the resonator has ceramic packing, and that I should not have any over heating concerns.

Overall I am very happy with the sounds now and I would recommend the resonator from my own experience.

[kwav8r]

Originally Posted by Jhunsberger

Perhaps I am the SS guy you are referring to, here are pics of the 60608 resonator installed on my SS, with the 60606 and ATAK system, also using the NEP cat delete pipes.

Although not the best pics of the actual 60608, but you get the idea.

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Yep, you’re the guy! Thanks for posting the pics and giving your impression of them. Think my opinion is much like yours with respect to the cat delete- it’s just two raspy for me.

Judging from your pics I don’t think there’ll be any problem getting the resonator in my ZL1. Underside looks much the same (not surprising).

I’m still running the OEM suitcase (I like the stealth mode too much with the NPP) and waiting for the right exhaust note to come out. To me, deeper is better.

Again, thanks much

[kwav8r]

OK, so got the Borla Resonator (60608) installed and I couldn’t be happier with it. After initially installing just the 60606 (secondary cat delete w/ X-pipe) the exhaust note was too raspy and loud for me especially at three quarters to WOT, I also wasn’t a fan of how loud it was on start.

The 60608 deletes the center (straight mid pipe) section and goes on as a single piece. While I was concerned about it fitting and making contact with the tunnel bracket toward the rear of the car it actually gave more clearance to the bracket and it takes the guess work out of which way to twist the mid pipes.

Exhaust note is definitely deeper, not as loud inside the car at 3/4 to WOT, but it’s still aggressive and you still getting some good exhaust pop when decelerating.

Overall couldn’t be happier. I’ll try to post a video in the next couple of days.

[1LE Red Dragon]

Awesome. Glad you got it on a good sale too.

[kwav8r]

Originally Posted by 1LE Red Dragon

Awesome. Glad you got it on a good sale too.

[1LE Red Dragon]

I installed my 60606 yesterday.. It is a little rowdy in track mode... But I like it. Glad you like your new setup too.

[Chris Edwards]

Why not go with a Magnaflow 2 into 2 resonator? Heard they are even quieter and sound better.

[Stealth7]

When you are referring to "cat delet" pipes are you talking about the secondary cat resonators or the primary catalytic converters? Thanks

[Can'tHave2MuchHP]

Nice setup OP. Glad it worked out for you. My guess is this will go wild with the people who don't love the raspy sound of an uncorked LT4.

[kwav8r]

Originally Posted by Stealth7

When you are referring to "cat delet" pipes are you talking about the secondary cat resonators or the primary catalytic converters? Thanks

Secondary cats are deleted, the primaries still sit inboard of the O2 sensors. The 60606 deletes those cats (pun intended). FWIW, some folks refer to the OEM secondaries as resonators but, when you look inside they definitely look like catalytic convertors (honeycomb material).