Well I am holding off on doing the rats nest removal till my part from RB comes in the mean time I wanted to ask some of the guys that have done the mod what kinda hp gain can I expect to see?? Will it be noticeable?

 

i don't think it's suppose to be a power mod, I thought it was more of a simplicity thing. Though i can't speak from experience since my car has to pass cali smog...

 

h.p. gain = 0
you have to get a carb and exaust if you want h.p. gains.

 

i think roughly 250 hp

 

None.

Well, actually, you'd probably lose power, given some of the devices you'll be removing.

 

How can losing all that weight make you lose power???... Please explain...

 

What weight?
Some sheetmetal brackets,a little aluminum and rubber?The smogpump is a few pounds,but not that heavy...and it only takes about 1HP to run it.

You want to lose weight,ditch the heavy stock exhaust manifold,or battery,or popup headlights,or floor tar.The rats nest doesnt amount to a hill of beans.Or even a can of beans.....its mainly for simplicty and looks.

 

All that weight. Sure those solenoids and the wiring probably wweight two, three pounds tops. And weight loss makes the engine more powerful

You disconnect your vacuum advance. Part throttle power goes away, fuel economy goes into the *******.

Still working on how the various mixture control solenoids function (maye never get round to doing those tests...) but they do do *some*thing. But not any more if you rip it all out in a fit of blissful ignorance.

Most people botch the removal because they don't know what or why they are doing what they are doing, so they plug off things that shouldn't be and things like that. If a person knew what everything did, they wouldn't be afraid of it and wouldn't want to just arbitrarily pull it out.

You people like to bitch about piston swaps, common argument "If you'd just learn the Wankel instead of swapping in a piston engine..". Well guess what. Arbitrarily yanking the solenoid rack (aka "rats nest" if you're ignorant) is the same exact thing only somehow people feel justified in it.

 

Woo Easy Guys I am fairly new to the rotary... Try not to rip into me to hard.. I am trying to gather information I assumed that by pulling the emission eq. you would get a slightly higher airflow into the motor Thanks... so can someone in short give me some adva. to disadav of doing this mod.. is it worth the roughly 50$ in loose ends it would cost to do the mod?

 

i like the simplicity of it. i remember at the car wash i use to spray of my engine, some of that rat nest wiring would get wet and i wouldnt be able to start my car for 10 minutes. bare essentials on my ride.

 

I personally just removed it due to the fact that the previous owner let the behive leak and leak so my engine was covered in oil. It does make the engine look alot more simple aswell, I think thats why most people do it. I don't really know how you can mess it up anyway, mazsport makes it very clear and simple to understand. Took it off my 13bt too, makes it look better, idles perfectly fine, don't have a big ugly airpump in the way.

 

What do you need the lawn mower belt to run that they pictured on mazda speed... :-) I am confused Does it run the a/c... lol cause god knows I don't have that

 

Well my personal opinion on it is if you dont need it where you live ditch it. The simplicity of the engine is amazing afterwards, and you feel successful like you have accomplished something... I was proud of what my engine bay looked like after words.... (of course I polished up the aluminum housings a bit even)

 

the lawn mower belt is to make sure that the waterpump pulley gets a good belt connection at high rpms and doesn't slip (crappy terminology) it connects from the main pulley to the waterpump pulley to ensure that it is getting driven

Here ill attach a picture of what it looks like installed. The green belt is the so called yahoo lawn mower belt...

 

Well said. People fear what they do not understand.

-dave

 

The thing is, there is so many potential problem areas with a old rats nest, hard vacuum hoses creates vacuum leaks everywhere and stuff. Its just easier to remove all the stuff then it is to constantly attempt to troubleshoot stupid air leaks... If your car runs good the way it is its up to you, if you want your engine to look clean remove the crap, but if you don't care and your car runs great just leave it.

When I had to choose my car would not idle, had little power, and more symptoms of vacuum leaks, after all the lines got plugged and stuff the car seemed to run much better then before. Pretty much if its working, don't mess with it...

 

it adds about as much hp as a yellow "powered by honda" sticker =)

 

Well My RX-7 is running rough.. but then again I heard most of them idle alittle rough... where can I post a video at??? I will make one so you guys can tell me if it's running normal or not

 

once you get it warmed up, it actually should idle fairly smooth and accel fairly smooth, they typically run rough at startup and on decel a lit bit, but if this is a new car, have you done a tune up? new fuel filter, sparkplugs, oil, all of that will help

 

Okay, people. After removing the nest, there was a noticeable gain on my car. Not in power, but in MILEAGE. Anyone claiming that the removal hurts your gas mileage is speaking out of their ***, and hasn't done tests to prove otherwise.

Maybe with vacuum secondaries, it's a different story. But with Mechanical, I noticed a 5 mpg gain in mileage over when I had the nest installed. This was one of my first experiments that I actually logged.

After reading many posts like this, I replaced my Rat's Nest. (Everything but the ACV and air pump, as I have an aftermarket Exhaust with no cats). I drove it for a week, and recorded 17 MPG just around the city, and approximately 20 MPG on the freeway. I then proceeded to remove the nest, and did the same test.

I got 21 MPG city, and 25 freeway.

I think that's enough of a test to tell ME that the nest did SOMETHING.

I think when I can drive the car again, I'll put it BACK ON (again) and do some 1/4 mile runs, record the times, and remove it, and do the runs on the EXACT SAME ROAD again, and record THOSE times. That should settle wether there's a power gain or not (I think, just to be fair, I'll have to strap the air pump on, dummy style, just to get the belt drag).

 

JJ - Just make sure to use something relatively accurate like a Gtech so human error is cut down.

I also liked the simplicity of it all as I had tons of other problems when i first got my car and decided that the emissions stuff removed was far easier to track everything down. I also took off my AC because it didnt work anyways which also cleaned up the engine bay. No cold or hot start assist, no AC, no air pump. Makes a nice, clean looking engine bay. At firs when I removed it, I thought there was a performance gain but I doubt it was a real one. I say, if you decide to keep it cool. Just go ahead and replace all the hoses so you wont have to mess with it later. Lots of hoses with lots of bends so make sure and get hoses that are quality, not cheaper ones that may kink.

 

my car used to puff smoke. run rough etc, but after rats nest removal it ran much better. This is somethin u should do!

Make sure you do a tune up afterwards for best results!

 

ok kinda new to the terminology could someone give me a pic on what a rats nest TRUELY is? need to make sure we are on the right page as to what it is. was thinking about doing this because i love simple engines, hate playing with vacuum.

 

this picture kinda sucks but it shows my old rats nest. It is composed of several selenoids running across the top of the engine for emissions purposes...

The rats nest is circled in red...

 

ohh ok, that is what i was thinkin it was, how the hell i remove it?, i hate that vacuum ****. ive had a problem with it before on this same car.

real quick walk through anyone? frequent problems?