Borla Catless Midpipe?
 

I came across this piece yesterday. Supposedly they were just released yesterday. Its the Borla 60541 cat delete mid pipe, the blog said it was 6.7lbs and should be good for a few HP. Think I might pick one up here to go with my borla catback and future headers.

Thoughts? Is it gonna throw a CEL?



http://25.media.tumblr.com/00789477d...hxko1_1280.jpg

no cel....the two o2 sensors are in the manifold

Man looks like I need to get under there again and poke around.

I didn't have a cat on my stock mid pipe only a resonator.

he is talking about the front pipe. the front pipe has both a 2ndary cat and a funky looking muffler in it. the midpipe is already replaced with his borla catback.

to the OP, if you remove all the cats and don't at least run a resonated front pipe... it is going to be loud and raspy as heck.

That pic is of Borla's midpipe. The front pipe would need a hanger to match the OEM front pipe, wouldn't be that long and needs to have a bend up too meet the overpipe.

http://blog.perrinperformance.com/wp...st-diagram.jpg

Its probably warped too...

Ordered mine today from ft86speedfactory along with the borla catback from amazon. I'll post back when its all put on a ready to go in a week or so.

I actually think it might be the front pipe and over pipe combined. The donut gasket looks like it fits onto this pipe like the stock front pipe. Plus as was stated earlier their catback already replaces the stock midpipe.

I think you are correct. If you look at ft86speedfactory's website, it lists front pipes and over pipes as the same part.

once you go header, the 2 cats make it liveable, without that 2nd cat, its gonna be track car loud

Just an FYI for anybody thinking about getting this pipe. According to ft86speedfactory, borla is about 3 weeks out from shipping.

is anyone running high flow cat or cat-less on a stock exhaust?

There wouldn't really be much benefit from that, so i doubt it. You might see 1hp if youre lucky.

No, that pic is part number 60541 the de catted, un resonated front pipe / over pipe combo.

Working from header back:
over pipe -> front pipe (contains 2nd cat and a small muffler) -> mid pipe (contains resonator) -> axleback (aka muffler)

The Borla catback (and all cat backs for that matter) replaces the factory midpipe and axle back section.

There are several over pipe / front pipe combo's including this borla piece, nameless, motiv, etc.

Wow, is the stock exhaust that restrictive? I always had good experience with stock exhaust + HFC or test pipe with other cars before.

I just don't want to make this car too loud, but I am planning to replace stock cat with either hfc or testpipe..

Just a guess. Going off of the fact that most cat backs only gain you about 5-10hp.

so this replaces the front and mid pipe?

It almost looks like it replaces the overpipe and front pipe, i haven't seen ANY 2 piece front pipes.

Getting a Catback is going to replace your Axle back ( Rear muffler ) and the mid pipe ( resonator ). Getting this pipe, a Front pipe + Overpipe combo which will remove your 2nd Cat and replace it with an uncatted front pipe. While the over pipe is going to replace the part coming from the headers to the front just to a less restrictive design.
and if you plan on doing the Borla headers, you are going to end up with a full catless exhaust because the primary cat is located in the headers and borla's design eliminates it
i think you guys should note that this front/over pipe is a 2.25" design :thumbdown:

i plan on doing a revworks uel and this, also what's so bad about a 2.25 design? Seems the best for a NA engine like ours.

Yes I can see that now.

Nothing wrong with 2.25 on this car, I think any bigger is not optimal for an NA vehicle.

Look what the nice man in brown brought me today :burnrubber:

Manufactured when? and released now?

Love the borla stuff, now just need to buy some...

Yeah i noticed that as well, oh well.

Just finished putting it on about half an hour ago.

INSTALLATION:
Good god that front pipe is hard to get out/put in. I had to unbolt the headers to get the flange lined up. Other then that, its pretty self explanatory, which is good because there was NO instructions at all, nor are there any on the borla website. Its a 1 person job though, although it did take me about 3 hours.

RESULTS:
The butt dyno likes it. The car seems to rev up a little quicker and and growls a little harder(I already had Borla catback before this). No rasp, that i've noticed yet, although i've only driven it for about 5 miles. Its louder then with just the cat back, but not obnoxious or tiring(again, only driven it a little)

So the first impressions are good. This is my 4th Borla purchase and have yet to be disappointed.

I'm confused... You had a borla catback already aka mid pipe and axle back... Now this fits in where?

The cat back goes from the cat(not including the cat) back to the exhaust tips. The mid pipe/front pipe goes from the headers(not including headers) to where the cat back come in.

Basically cat back is the back half of the car, mid pipe is front half(not including headers). So now I've replaced everything except the headers.

It is a little confusing since there is a cat in the stock midpipe as well as the headers. The term "cat back" refers to the one in the midpipe.

video?

So this is actually just a front pipe and over pipe... Fucking borla.

I could take one, but it'd be crappy iphone 4 video, with no before for comparison...

Hmm i think its called an Front/ Over pipe combo not Mid/front pipe. when you mentioned the front pipe was hard to install i think that was the over pipe because thats where it gets connected to the Header.
while the part from the front to the axle is the Mid pipe and the back is axle back

It seems like Borla has a different naming scheme to what you normally see. They probably call the midpipe (as seen on the following diagram, Cat > Muffler) a downpipe since they call the Over pipe/Front pipe a midpipe?

http://blog.perrinperformance.com/wp...st-diagram.jpg

The problem is the RevWorks collector is a 2.5". You will be bolting up a 2.25" pipe to their header. This can cause issues with flow and overall power.

Thank you posting the diagram! :thanks::thanks:

You are correct, the front pipe and over pipe is what i just installed. From the factory it comes in two pieces, from borla its just one.

Would that drop be noticeable? I means its only dropping .25 of a inch.

To be honest, I am not sure. There is a HUGE thread about it on S2ki. I had a 70mm test pipe on my S2k running stock exhaust which is 60mm, and I ended up switching to a matching one. I can't say I felt a huge difference, but it was such a small power adder to begin with...

http://www.badassperformance.com/mtech/flow101.html Look at figure 3

I think the main issue is it will cause unwanted back pressure.

I know this thread is really old but I'm installing this same over-pipe & front-pipe combo on my car and was trying to determine if you are supposed to use the donut gasket. The Borla front-pipe has a bulge on the end that connects to the mid-pipe. I'm not sure if this eliminates the need for the donut gasket?


this is the bulge I'm referring to:
http://www.subispeed.com/media/catal.../0/60541-2.jpg