C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

1991 C4 | No Airbox

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Old Mar 15, 2023 | 03:39 PM
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Default 1991 C4 | No Airbox

I've had my 1991 C4 for two (2) glorious months now and have enjoyed every day.

Re the lack of an airbox (see photo), why would such a setup be rigged? Seems rather jerry-rigged.

I understand true performance upgrades, but this setup is not one of them, is it?

Thanks!

Notice the lack of an airbox
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Old Mar 15, 2023 | 03:55 PM
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Looks like bubba was involved
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Old Mar 15, 2023 | 04:00 PM
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That wasn't the exact name of the dude I bought the car from, but he was definitely a Bubba/Rusty/Jim Bob/Ricky Bobby-type.
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Old Mar 15, 2023 | 04:35 PM
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If you want to go factory you can contact Mirrock Corvette parts in Saltsburge PA he should be able to put hands on one.

Now why for Hack Job, the air tube's have a habit of rotting/cracking or it was a Feeble attempt to get more air in but that's a Epic Fail that dinky K&N has less area to pass air and given the fact it's more inside the hood Hotter Air

Last edited by s carter; Mar 15, 2023 at 06:31 PM.
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Old Mar 15, 2023 | 04:42 PM
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Thank you, Sir.

Was thinking of eventually doing stock. Have been on RockAuto.com to compare different options.
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Old Mar 15, 2023 | 06:23 PM
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Go over to the C4 Parts for sale or wanted on the Forum and post a WTB Air Cleaner and You will have one in the mail shortly.
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Old Mar 16, 2023 | 07:30 AM
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That is the new Hot Air Intake/Tire Saver option. You can thank the PO for saving you all that money 🤣🤣😂😂😂
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Old Mar 16, 2023 | 09:09 AM
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PO must have been in aviation. The orange hose is used for heating or to direct hot or cooling air on airplanes.
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That filter is tiny....WAY smaller than the stock filter. If it did anything, it took power away.
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Old Mar 18, 2023 | 05:19 AM
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Yep, that looks like the infamous Bubbafied-Purple Headed Warrior-Trouser Snake Edition-Hot Air Intake System!!!! I can't unsee it, for the sake of all things Corvette, Please take that off....bag it 3 times before throwing it away....so Bubba's cousin at the landfill doesn't see it and take it home!!!! Tom is right, it's costing you horsepower, and even if it wasn't, it is so Fugly and just plain Gross on so many levelsI'm so glad you said Bubba installed that abomination and not yourself...thankfully you came here for guidance before you showed too many people "what she's got under the hood"👍
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Old Mar 18, 2023 | 07:59 AM
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Originally Posted by kielbasava
I've had my 1991 C4 for two (2) glorious months now and have enjoyed every day.

Re the lack of an airbox (see photo), why would such a setup be rigged? Seems rather jerry-rigged.

I understand true performance upgrades, but this setup is not one of them, is it?

Thanks!

Notice the lack of an airbox
Wow, looking at where the hose clamp is that “supposedly” holds this apparatus to the throttle body I’d be willing t bet it’s not fastened to anything. Would not be surprised to find a large gap on the bottom side of that orange hose. On the good side, you recognize what a cluster this is.

later, Tiny
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