In anticipation of a camp trailer I’ll be towing this spring and summer, I took a look at helping my ‘05 sport run as cool and as efficiently as possible.
I upgraded the transmission cooler substantially, but what I’m more excited about is the exhaust (cat back) system I just had installed today.
Its made by BA Mufflers, also known as Dirty Deeds Mufflers. They are pretty well known in the Tundra world, doing a lot of work on the 5.7, and less so on the 4.7 trucks.
They have a system that they have designed for the gen4 4runners with the 4.7 V-8...it fits our GXs perfectly.
Keith Carty, the owner, calls it a 26x6...26” long, 6” diameter. I call it perfect.
Mellow, throaty pulse at start-up, great idle, very slight roar under moderate acceleration, and completely silent on the freeway.
Additionally, it gives just a bit more throttle response...I can feel the truck running easier, getting to speed more effortlessly. Like it’s just a little lighter on its feet. Nothing drastic, but seat-of-the-pants worthy.
The system I ordered has the “heimholtz” resonator permanently attached. I give that the credit for the mellowness and quiet highway manners.
Keith was great to work with, in person over the phone. He really knows his stuff, knows our engines well, and will take the time to design what you want...mellow, raspy, or anything in between.
BTW, I tried installing myself, and was all set to do it but ran into grief on the very first bolt. I’d hit them with PB Blaster the night before, and was expecting a moderate struggle but when I started to feel the bolt stripping (even with a 6-point socket), I decided to call in the pro’s.
A local muffler shop torched off the bolts. The nut I struggled with? It (and it’s twin on the other side) were welded to the bolt. I’m really glad I didn’t go nuclear and try to brute-force them off. Best $66 I’ve spent in a while.
Anyway, thumbs up to BAMufflers / Dirty Deeds. I’m a very satisfied customer.
I upgraded the transmission cooler substantially, but what I’m more excited about is the exhaust (cat back) system I just had installed today.
Its made by BA Mufflers, also known as Dirty Deeds Mufflers. They are pretty well known in the Tundra world, doing a lot of work on the 5.7, and less so on the 4.7 trucks.
They have a system that they have designed for the gen4 4runners with the 4.7 V-8...it fits our GXs perfectly.
Keith Carty, the owner, calls it a 26x6...26” long, 6” diameter. I call it perfect.
Mellow, throaty pulse at start-up, great idle, very slight roar under moderate acceleration, and completely silent on the freeway.
Additionally, it gives just a bit more throttle response...I can feel the truck running easier, getting to speed more effortlessly. Like it’s just a little lighter on its feet. Nothing drastic, but seat-of-the-pants worthy.
The system I ordered has the “heimholtz” resonator permanently attached. I give that the credit for the mellowness and quiet highway manners.
Keith was great to work with, in person over the phone. He really knows his stuff, knows our engines well, and will take the time to design what you want...mellow, raspy, or anything in between.
BTW, I tried installing myself, and was all set to do it but ran into grief on the very first bolt. I’d hit them with PB Blaster the night before, and was expecting a moderate struggle but when I started to feel the bolt stripping (even with a 6-point socket), I decided to call in the pro’s.
A local muffler shop torched off the bolts. The nut I struggled with? It (and it’s twin on the other side) were welded to the bolt. I’m really glad I didn’t go nuclear and try to brute-force them off. Best $66 I’ve spent in a while.
Anyway, thumbs up to BAMufflers / Dirty Deeds. I’m a very satisfied customer.
