Was browsing around and found this Downpipe:

link: Magnaflow 23405 PONTIAC GRAND PRIX Direct Fit Catalytic Converter

Don't know what it's made of or if its truely a direct fit. wondering what your take is on this.

I've never even heard of that before. I would be a little weary. maybe search around for other opinions, or just get one from the vendors we already know, lol.

Never heard of them. It doesn't tell you what diameter the DP is, what grade of steel nor what type of flex is being used. fwiw interlocking flex is the preferred flex, due to the fact it does not tick like the other flex joints.

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04 Indy SS build #972
XP, TOG's, Lightning injectors, 2.8 pulley, 105 CC springs, Wizaired, 3.29 gears, tripleedgeperformance ported blower, machined LIM, 180* tstat, RS12YC@.053, FP rewire, Alt rewire, stage 1 V boost, PRJ wires, Stage 2 IC

cheap knock off it looks like??

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99 DARK BRONZEMIST METALLIC GTP SUPERCHARGED SEDAN. --MODS-- FWI, 104 plugs MSD coils and wires, 180 t-stat, dual thrush exhaust, Kenwood complete system 10' Sub ported, raised spoiler, red calis, D/S Baer rotors, Hawk Pads.

I dunno. Supposedly I have an interlocking flex on my ZZP DP and it ticks...

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2004 Impala LS - got some mods
NAIOA Moderator

Making you think twice before picking on Impalas

magnaflow is a big company (carsound is the parent company)

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Steve
'97 GTP VS cam, ZZP PCM, and not much else yet

I have a Hogan DP with the interlocking flex and it doesn't tick. I got my son the same DP for his GTP and it doesn't tick. I was one of the first people that got the interlocking flex from Curt Hogan, when he decided to give the new flex a try. I didn't like my first DP, because it had the standard flex and it ticked, so I hit Curt up about making me one with interlocking flex. It took him a while to find a supplier, but once the new DP came in with the new flex, I was very pleased.

Did you look a the DP flex before you installed it? Visually there is a difference, but with the braid on, it can only be seen from the inside. Maybe they sent you the wrong one.

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04 Indy SS build #972
XP, TOG's, Lightning injectors, 2.8 pulley, 105 CC springs, Wizaired, 3.29 gears, tripleedgeperformance ported blower, machined LIM, 180* tstat, RS12YC@.053, FP rewire, Alt rewire, stage 1 V boost, PRJ wires, Stage 2 IC

Here is a great DP for about the same price....Add $10 for an interlock flex

DP2S

webracin

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2001 Grand Prix GTP
ZZP HUB 3.2 3.4, ZZP 8 Rib conversion, JC 3" DP Gen 2 cat & U-bend Delete, Accel Super Stock 8mm wires, DHP 1.5, 180* Thermo, Throttle Spacer, SS Intercooler, ZZP Fuel Rails, SLP CAI w/K&N Cone, Dynomax cat back, ZZP Tranny.

2000 Grand Prix GTP Daytona K&N, Flowmasters

According to ZZP, they only carry 2.5" interlock flex (not standard 2.5" flex) so all their 2.5" DPs get the interlock flex. I did look inside and if you showed me comparison pictures between the two I could tell you which I have.

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2004 Impala LS - got some mods
NAIOA Moderator

Making you think twice before picking on Impalas

This is what it looks like:

Interlock Flex


Regular Flex


The regular flex has woven Stainless Steel inside and out, where the Interlock Flex has interlocking stainless steel belts.

webracin

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2001 Grand Prix GTP
ZZP HUB 3.2 3.4, ZZP 8 Rib conversion, JC 3" DP Gen 2 cat & U-bend Delete, Accel Super Stock 8mm wires, DHP 1.5, 180* Thermo, Throttle Spacer, SS Intercooler, ZZP Fuel Rails, SLP CAI w/K&N Cone, Dynomax cat back, ZZP Tranny.

2000 Grand Prix GTP Daytona K&N, Flowmasters