Question About Solo Hi Flow Cats - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

FB3 · 02-04-2014, 09:28 PM

I have heard of several complaints of problems with the fit of Solo hi flow cats to the factory exhaust manifolds. It seems as if they do not bolt up properly to the factory manifold and are prone to exhaust leaks which cause a check engine light.

Is this a common problem or a random problem, and if one experiences it what can be done to correct it?

axis · 02-04-2014, 10:17 PM

Never heard there was a issue with them bolting up to the OEM stuff. If they're throwing a CEL, it's most likely the rear O2 sensor CEL.

cal45 · 02-04-2014, 10:24 PM

The shop that installed mine didn't have any fitment issues and the factory O2 sensors get reused on the Solo's - so no CEL's either.

rberns · 02-04-2014, 10:48 PM

Who told you this? Before I went with headers I got solo performance HFC and they are great. No issues whatsoever and the company has great customer service. I recommend them to anyone that doesn't want header but want added power and exhaust tone.

rontammy0 · 02-04-2014, 11:31 PM

It's true..the shop that installed mine did a good job but I did notice the flanges didn't line up exactly. I didn't have any problems with codes or leaks. Now that I have jba shorty headers on the car the fit is perfect.

Apex Motorsports · 02-05-2014, 06:58 AM

We have never encountered that or had any customers come back to us with an issue like that on the Solo cats.

Wolvie70 · 02-05-2014, 08:31 AM

The flanges are larger than the factory ones, that may be what they are referring to. As far as holes and mating surface they lined up fine, the solo cats have slotted holes or oval shaped to help fitment I assume.

As far as CEL, I have one right now. It was read at autozone as p0420 something like that. I was CEL free for 3 weeks. Then started car one morning and there it was. Going to check the bolts for tight and clear the code and see what happens. Not real happy at this point with that.

But sound is awesome.

axis · 02-05-2014, 09:34 AM

Quote:

Originally Posted by Wolvie70

The flanges are larger than the factory ones, that may be what they are referring to. As far as holes and mating surface they lined up fine, the solo cats have slotted holes or oval shaped to help fitment I assume.

As far as CEL, I have one right now. It was read at autozone as p0420 something like that. I was CEL free for 3 weeks. Then started car one morning and there it was. Going to check the bolts for tight and clear the code and see what happens. Not real happy at this point with that.

But sound is awesome.

That code is the cat efficiency code. It stems from the rear O2 sensors not reading right from the high flow cats. There are a couple suggestions on how to get rid of it but many just tune it out.

FB3 · 02-05-2014, 06:52 PM

Thanks to all for the response to my question. I am considering putting these on my LS3 with the dual mode exhaust. Will think about it.

fabric8 · 02-05-2014, 07:04 PM

Quote:

Originally Posted by FB3

Thanks to all for the response to my question. I am considering putting these on my LS3 with the dual mode exhaust. Will think about it.

I just got my hf cats yesterday from Steve at Solo Performance. I'll be installing them Saturday on my 1LE with NPP dual mode exhaust. Will let you know how the install goes.

cal45 · 02-05-2014, 09:52 PM

Quote:

Originally Posted by fabric8

I just got my hf cats yesterday from Steve at Solo Performance. I'll be installing them Saturday on my 1LE with NPP dual mode exhaust. Will let you know how the install goes.

You won't be disappointed. The L99 SS didn't have the NPP as an option so I wound up installing the Solo HFC's and their MACH XL w/J pipes cat back system. Now with the CAI, the car sounds like it should with better performance and no drone.

MedicalCowboy · 02-05-2014, 10:58 PM

Quote:

Originally Posted by axis

That code is the cat efficiency code. It stems from the rear O2 sensors not reading right from the high flow cats. There are a couple suggestions on how to get rid of it but many just tune it out.

What are these suggestions you speak of????

ST1LE · 02-06-2014, 10:12 AM

Why do people spend so much on high flow cats that require a tune to avoid a CEL, when Stainless Power headers and cats can be had for so close to the same price? And Texas Speed for that matter!!!

Apex Motorsports · 02-06-2014, 10:18 AM

Quote:

Originally Posted by ST1LE

Why do people spend so much on high flow cats that require a tune to avoid a CEL, when Stainless Power headers and cats can be had for so close to the same price? And Texas Speed for that matter!!!

The vast majority of the time they do not require a tune. Like I mentioned before, we have not encountered any problems with them.

02-04-2014, 09:28 PM	#1
FB3 Drives: 2014 Camaro 2SS RS LS3, BRM, NPP Join Date: Apr 2010 Location: Miami, FL Posts: 411	Question About Solo Hi Flow Cats I have heard of several complaints of problems with the fit of Solo hi flow cats to the factory exhaust manifolds. It seems as if they do not bolt up properly to the factory manifold and are prone to exhaust leaks which cause a check engine light. Is this a common problem or a random problem, and if one experiences it what can be done to correct it? __________________ Experience is the best teacher but the tuition is very high.

02-04-2014, 10:17 PM	#2
axis Search Ninja Drives: 2010 Black 2SS/RS A6 Join Date: Oct 2009 Location: Central Ark Posts: 7,183	Never heard there was a issue with them bolting up to the OEM stuff. If they're throwing a CEL, it's most likely the rear O2 sensor CEL. __________________ 2010 Black 2SS/RS A6 Halltech CF 102 fed GPI modded intake manifold Bo (knows) White ported TB Kooks LT's/ Dynomax VT Pfadted (springs/sways) Dyno tuned by Rhino and GPI I once parallel parked a train.

02-04-2014, 10:48 PM	#4
rberns Drives: 2011 Camaro 2SS/RS Join Date: Apr 2011 Location: US Posts: 3,291 View My Garage	Who told you this? Before I went with headers I got solo performance HFC and they are great. No issues whatsoever and the company has great customer service. I recommend them to anyone that doesn't want header but want added power and exhaust tone. __________________ 2011 Camaro 2SS/RS, Circle D 3200, ADM Transmission Cooler, BTR Valvetrain, Cam Motion .621 .595 228/244 113+4, ARH 1 7/8 full exhaust, Cold Air Inductions, Katech C5R TC, Melling HV, BTR SLR lifters, Trunion Upgrade, LS2 Dampner, LS9 head gaskets, Bo White PTB, MM can, GFX, Subs, B&M Deep transmission pan, Holley fuel rail, Proform valve covers, relocated coil packs

02-05-2014, 06:52 PM	#9
FB3 Drives: 2014 Camaro 2SS RS LS3, BRM, NPP Join Date: Apr 2010 Location: Miami, FL Posts: 411	Thanks to all for the response to my question. I am considering putting these on my LS3 with the dual mode exhaust. Will think about it. __________________ Experience is the best teacher but the tuition is very high.

02-06-2014, 10:12 AM	#13
ST1LE Drives: E92 BMW M3 Join Date: Oct 2012 Location: Houston Posts: 4,496	Why do people spend so much on high flow cats that require a tune to avoid a CEL, when Stainless Power headers and cats can be had for so close to the same price? And Texas Speed for that matter!!! __________________ SOLD - 2013 1LE - Pat G Spec'd Cam, NPP with 1 7/8" Long Tube Headers with High Flow Cats, Intake w/scoop, Ported Throttle Body, and Apex 1.25" Lowering Springs. J-Rod Built and Matt@FSP Tuned

02-04-2014, 10:24 PM	#3
cal45 Drives: 2015 Blue Velvet Metallic ZL1 Join Date: Nov 2013 Location: Orlando & Flagler Beach,FL Posts: 1,453	The shop that installed mine didn't have any fitment issues and the factory O2 sensors get reused on the Solo's - so no CEL's either.

02-04-2014, 11:31 PM	#5
rontammy0 Account Suspended Drives: 2011 2SS/ RS INFERNO ORANGE L99 Join Date: Dec 2012 Location: Alliston Ontario Canada Posts: 9,057 View My Garage	It's true..the shop that installed mine did a good job but I did notice the flanges didn't line up exactly. I didn't have any problems with codes or leaks. Now that I have jba shorty headers on the car the fit is perfect.

02-05-2014, 06:58 AM	#6
Apex Motorsports Drives: 2000 Camaro SS Join Date: Feb 2010 Location: Louisville, Ky. Posts: 25,179	We have never encountered that or had any customers come back to us with an issue like that on the Solo cats.

02-05-2014, 08:31 AM	#7
Wolvie70 Drives: 2016 2SS, Summit White, A8, NPP Join Date: Apr 2013 Location: Arkansas Posts: 717	The flanges are larger than the factory ones, that may be what they are referring to. As far as holes and mating surface they lined up fine, the solo cats have slotted holes or oval shaped to help fitment I assume. As far as CEL, I have one right now. It was read at autozone as p0420 something like that. I was CEL free for 3 weeks. Then started car one morning and there it was. Going to check the bolts for tight and clear the code and see what happens. Not real happy at this point with that. But sound is awesome.