Cli63

Hi, I currently have a full agency power exhaust, but am planning to install some aftermarket resonators, due to drone, and maybe some sport cats also while I'm at it. I'm also planning to get a SC and will obviously have to get my car re-tuned at the shop.

My question is would it make a difference, in relation to the performance of the tune, if i have the exhaust work done before vs after the SC install?

Considering I had to get a catless tune when i put on the headers, my guess is it will if i put on cats and wont if its just resonators?

Anyways, would much appreciate some advice from someone more knowledgeable on cars.

INS1GNIA

Which SC will you be getting, you could also get the work done at the same time depending on who you go with.

Merc63

More details needed?

Whats SC, super charger or sport cats?

Don't put cats on with the blower, which blower, what stage, etc etce tc

mr747

do it right the first time go with mbh for your exhaust

Cli63

I'm Planning to get the new magnuson supercharger.

Reason im asking is because I will have to drive about two hours to get it installed at a certified dealer. So far all the work done on my car is by my local mechanic, and would prefer to have him do the exhaust work cause he charges very reasonably.

SC as in supercharger.

Cli63

I don't think its a problem with the headers. Its the vavletronic catback that's causing the drone. Already had a bit of drone before i had headers installed, but just got too loud after the headers went in.

Southways

Do the exhaust first. A custom tune will be required if/when installing headers.

I am Jeff

Add an x pipe, it will smooth out the drone.