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Do It Yourself Lexus IS-F Muffler Delete

Now that I've had my car for a little while, I'm completely thrilled with everything the F offers...except for the exhaust, it's too dang tame! Obviously plenty of folks feel the same way, as I've read about many of them going with the awesome JoeZ exhaust system, and while it sounds mean, I'm not ready to take the plunge with a full exhaust just yet. On the other hand, I'd heard of some folks getting rid of their mufflers with pretty good results, so I decided to give it a try instead.

I started off by picking up a stock IS-F axle-back pipe (with no mufflers). While that was in transit I started getting the other pieces and parts together. Since I like to tinker, and wasn't sure if I'd like the sound of a muffler-less F, I designed a little more flexibility into the setup by using three bolt flanges. That way, I could swap in a set of mufflers, or even have a couple choices if I wanted it.

Here's a shot of the flange that I went with. It fits tightly over the stock IS-F exhaust pipe. This is a NAPA part number, and if you look real close, you can see a Walker part number under their sticker. Sneaky! Also, the list price on these is way high for a simple steel flange. All I did was say "sheesh" and they quickly cut the price in half. I wish it was this easy to get discounts like this everywhere I go! Exhaust flange three hole

To go along with the flanges, I also picked up this exhaust gasket which is made to fit these flanges, and does so perfectly. Exhaust flange three hole gasket

The first step was taking this boat anchor of a stock rear section off the car. Two bolts and a few rubber hangers and it was pulled from its happy home. Lexus IS-F Exhaust Stock

Here's the complete stock axle-back section (w/mufflers) and the pipe-only version that I picked up. As it appears, the mufflers add a ton of weight to this piece. IS-F Stock Rear Exhaust

Here's the flange on the pipe. It just takes a little filing to get a perfect snug fit.

Here's the mufflerless pipe in place. As you can see there is a ton of room without the one bedroom apartment-sized muffler out of the way.

Here are both flanges mounted to give you an idea of where they sit under the car.

Finally, I get to throw some sparks! If any of you are considering learning how to weld, I highly recommend it. It's lots of fun and very rewarding. Plus you get to wear a welding helmet. Today I went and got the mail while wearing it. Keeps the neighbors guessing.

Ahh, Saturday in the garage. I grew up around cars and have been wrenching for a long time. There are few things that I enjoy more than taking on a little weekend project in the garage. Nothing clears my mind and helps me forget about all of the day to day stuff like this. Mig Welding

Here's a shot of the stock pipe with the flanges welded to it.

Next up was cutting the staight steel pipe to lengthand joining it to the other set of flanges. In this picture, I'm bending the steel rod that will be used for the exhaust hanger. I used the wire coat hanger as a template for the bends/lengths needed.

The delete pipes turned out great! They look very simple, but measuring/cutting them just right to fit/line up with the stock collectors was important and easy to mess up. I also welded the nuts to the flange to make installation/removal easier.

This is the best paint on earth. I've been using it for many years and am always amazed how easy it goes on, how good it looks for so many uses, and especially how tough it is. I spray this stuff on my toast in the morning. low gloss black

Here are the delete pipes installed!

Each pipe uses one of the stock rubber mounting isolators.

The best part is that you can't see a thing from behind the car!

So want to hear how it turned out? Crank up the volume!