tnmustang
Active Member
- Thread starter
- #1
Ok, a little background. I grew up working on vehicles in the 80s and 90s. Once vehicles started into computer controlled everything, I kinda backed away and let the stealership take over (outside of brakes and what not). So I am not completely ignorant to the mechanics of it all, but I am lost when it comes to tuning and expected behavior anymore.
Here's the deal.
Wife bought an 18 Mustang GT Premium with PP1 and 3.15 rear end. She bought it from the stealership and it was delivered to her. Next day, she starts it up and the whole neighborhood comes outside to find out what the racket is.
She bought it without knowing it had a Rousch CAI, Corsa LTH's, and a Borla 3in S-Type Active Exhaust Cat-Back. She puts it in quiet mode and it still sounds like a fire breathing dragon.
I tell her that it sounds exactly how it's supposed to (no resonator). She is highly disappointed and wants that stock sound back, so my first thought is to find someone who wants to trade out this exhaust with a stock one. I think she could probably keep the CAI and headers be just fine.
3 weeks later, she is complaining that gears 1-3 are jumpy off the line. We recalibrate throttle via the Accessory key method (Does this take a certain amount of time before the computer gets enough data?). She claims its better, but not for long. I don't know. I tell her when you up the horsepower that much, you are going to get harder shifts. Its a desirable trait (am I wrong?), and maybe it needs a tune?
She drive almost exclusively in normal and S+ modes and runs quiet mode 24 hours a day.
At this point I am out of my league. I need help.
Guys and gals, there are two things she really wants. She wants smooth acceleration and a quieter exhaust. I have been going through my head trying to figure out the most cost efficient way to do this.
1. Buy a fomoco factory active axel back system and downpipe the 3in to factory?
2. Buy an entire fomoco factory catback system.
3. Replace the entire exhaust from manifold to tail pipe and hope that it also fixes the acceleration "problem".
4. Pay for a "tune" for lower tach shifting
Any advice or direction from you guys would be super appreciative!
Thanks
tnmustang
Here's the deal.
Wife bought an 18 Mustang GT Premium with PP1 and 3.15 rear end. She bought it from the stealership and it was delivered to her. Next day, she starts it up and the whole neighborhood comes outside to find out what the racket is.
She bought it without knowing it had a Rousch CAI, Corsa LTH's, and a Borla 3in S-Type Active Exhaust Cat-Back. She puts it in quiet mode and it still sounds like a fire breathing dragon.
I tell her that it sounds exactly how it's supposed to (no resonator). She is highly disappointed and wants that stock sound back, so my first thought is to find someone who wants to trade out this exhaust with a stock one. I think she could probably keep the CAI and headers be just fine.
3 weeks later, she is complaining that gears 1-3 are jumpy off the line. We recalibrate throttle via the Accessory key method (Does this take a certain amount of time before the computer gets enough data?). She claims its better, but not for long. I don't know. I tell her when you up the horsepower that much, you are going to get harder shifts. Its a desirable trait (am I wrong?), and maybe it needs a tune?
She drive almost exclusively in normal and S+ modes and runs quiet mode 24 hours a day.
At this point I am out of my league. I need help.
Guys and gals, there are two things she really wants. She wants smooth acceleration and a quieter exhaust. I have been going through my head trying to figure out the most cost efficient way to do this.
1. Buy a fomoco factory active axel back system and downpipe the 3in to factory?
2. Buy an entire fomoco factory catback system.
3. Replace the entire exhaust from manifold to tail pipe and hope that it also fixes the acceleration "problem".
4. Pay for a "tune" for lower tach shifting
Any advice or direction from you guys would be super appreciative!
Thanks
tnmustang
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