[newchevyman]

Originally Posted by SFV1LE

Why make your own diffuser when these from ZL1 Add-ons, for muffler-delete, are only $250? Stock muffler design is $180.

Both options look horrible. They took the design of a beard trimmer and slapped it on the bumper.

[SFV1LE]

Originally Posted by RHD ZL1

There are multiple reasons.

A) I’m on the other side of the world. Sometimes shipping costs from the US to Australia is double if not triple what the parts are actually worth.

B) My exh system was designed here in Aus. I don’t know how the muffler positioning / layout compares to the US based systems. There is no guarantee that it would fit my layout.

C) Some of us actually have the skill set to make our own stuff.

D) It’s fun ! Most car guys “get it”. Very satisfying working on your own car and making something that is to suit your particular car that fits, works and looks good. Way more satisfying than clicking “add to cart”.

Didn't mean to insult or give anyone shit, it was a comment made quickly and too blunt and inconsiderate, I apologize. I also didn't notice you were outside the US, my bad.

I have made a few things for my cars as well. Building a diffuser seemed like a very challenging project that requires testing to do right and ensure airflow effectiveness, and a lot of work to fabricate it.

When I saw that the ZL1 Add-ons products weren't mentioned here and they are only $250 max here in the US (less than the price of a single tire), I decided that would be the solution for me when the time comes. It's rare to see a quality effective product that inexpensive. I'm not buying it for show, I will only install prior to track day and remove immediately after, so I don't care that it isn't pretty. Looks like it will install in minutes.

Nice work on your fabrication job!

[SFV1LE]

Originally Posted by KingLT1

Perhaps there are people still in this world that like to DIY? Yes I know a trait that is slowly going by the way side...Pretty sad actually. Not saying there is anything wrong with buying one pre-made either but there is no need to give a guy shit for wanting to make his own...especially when it turned out as good or better then what you can buy.

Didn't mean to insult or give anyone shit, it was a comment made quickly and too blunt and inconsiderate, I apologize. I also didn't notice he was outside the US, my bad.

Building a diffuser seemed like a very challenging project that requires testing to do right and ensure airflow effectiveness, and a lot of work to fabricate it.

When I saw that the ZL1 Add-ons products weren't mentioned here and they are only $250 max here in the US (less than the price of a single tire), I decided that would be the solution for me when the time comes. It's rare to see a quality effective product that inexpensive. I'm not buying it for show, my ZLE is for track and canyons only so I'll install prior to track day and remove immediately after, I don't care that it isn't pretty. Looks like it will install/remove in minutes which is great.

[ZL1 1LE]

Originally Posted by SFV1LE

Didn't mean to insult or give anyone shit, it was a comment made quickly and too blunt and inconsiderate, I apologize. I also didn't notice he was outside the US, my bad.

Building a diffuser seemed like a very challenging project that requires testing to do right and ensure airflow effectiveness, and a lot of work to fabricate it.

When I saw that the ZL1 Add-ons products weren't mentioned here and they are only $250 max here in the US (less than the price of a single tire), I decided that would be the solution for me when the time comes. It's rare to see a quality effective product that inexpensive. I'm not buying it for show, my ZLE is for track and canyons only so I'll install prior to track day and remove immediately after, I don't care that it isn't pretty. Looks like it will install/remove in minutes which is great.

I'd bet that the vast majority of aftermarket aero does not get wind tunnel tested and is for appearance over performance.

[SFV1LE]

Originally Posted by ZL1 1LE

I'd bet that the vast majority of aftermarket aero does not get wind tunnel tested and is for appearance over performance.

I agree, but I dont think that's really the case with the ZL1 Add On diffuser. Although I doubt it's wind tunnel tested, I bet they did some testing.

I hope it was not designed for looks, it looks bad :-) But it does seem to be designed for durability, functionality and ease of install, like most of their stuff.

[kropscamaro16]

i used to work in the aftermarket aero industry 99% of shit is made for looks



apr performance and a few other companies actually wind tunnell test there parts but most do not

[JT Camaro]

Originally Posted by RHD ZL1

There are multiple reasons.

A) I’m on the other side of the world. Sometimes shipping costs from the US to Australia is double if not triple what the parts are actually worth.

B) My exh system was designed here in Aus. I don’t know how the muffler positioning / layout compares to the US based systems. There is no guarantee that it would fit my layout.

C) Some of us actually have the skill set to make our own stuff.

D) It’s fun ! Most car guys “get it”. Very satisfying working on your own car and making something that is to suit your particular car that fits, works and looks good. Way more satisfying than clicking “add to cart”.

Excellent response and thank you very much for the extra info. My preliminary plans included extending/replacing the 4 bolts you did as well for support of the panel