So I recently bought an HKS hi-power exhaust. I got under my car last night just to look around and noticed that there appears to be a ground wire coming from the last flange before the muffler and bolting up to the frame. What is the purpose of this? I have never seen that before. Also, is this something I need to worry about reconnecting after I install the HKS?

 

no......never reconnected this to any of my cars and never any problems

 

The hks hi-power has a tab on it for the ground to be reconnected.

 

i always understood it to be a static electricity ground. +1 on not reconnecting it. But if the HKS has a tab, might as well use it.

 

You really don't have to do anything you don't want to, hell you don't even need to bolt up the new exhaust to the cats. Zip ties should be fine rebel.

 

i just loled.

I mean the tab is there, and the wire is there too. Mind as well bolt it up.

 

i always thought it was for better radio reception for some reason

guess i was wrongo!

 

Didn't reattach mine and it made no difference.

 

With that wire disconnected you probably lost 4-5 whp.

 

Nah it's cool cuz I put tint on too. The shop guy said that should be around 7whp.

 

My back end breaks loose in 5th gear.

 

lol at teh jokerz^^^. but in all seriousness, the most it will do is get you a quicker ground to the rear O2 sensors. AKA, instead of thinking its 1500 rpm when its really 1510 rpm, it will think its 1507 rpm when its 1510. YES!!!!

edit: just so you dont get me wrong, i have it connected, its easy to bolt up so why the hell not?

 

mine too. for some reason ive related it to winter weather, right after it rains and then the temp goes down below 15 F. ive also noticed it tends to happen when i pull the ebrake on the freeway. loose in 6th gear FTW. massive powarz

 

cool thanks guys!

 

OP,
Not sure if you resolved this or not, but there is a bracket on the driver's side HKS canister. Behind the tube facing the front of the car. I reconnected the OEM ground wire there.

 

I am not installing the exhaust just yet, I am taking the car to the track to get my stock baseline time, then will maybe put the exhaust on tomorrow! My question has been answered though! Thanks again everyone