Honda owners - check out this page

[Jess]

Its referred to as 'Brady's Free Mods page' the page is geared mainly toward the F22, H23 and H22, but i bet most of these mods can be done on other honda motors.

http://members.tripod.com/~Pre_ludE/pmods.html

Today, i did the ignition advance (selling zex kit), Fuel pressure mod

its running a bit rich, but not too bad. I can DEFINITLY feel an increase in power. After a trip to autozone, im going to do the EGR mod and the coolant bypass mod.

I'll let you know how it works out.

[Jess]

I did the EGR mod just now and noticed a difference. Doing the coolant bypass tomorrow. These two mods greatly reduce the intake temp. The EGR mod keeps heated air from entering the intake. The coolant bypass mod reroutes a cooling line so it doesnt go through the throttle body. This was designed for colder climates, but from what i understand, constantly routes coolant through the throttle body, which doesnt make much sense to me.

The changes I made today made a much bigger difference than the CAI did. The car lost a bunch of weight too which probably accounted for some of the butt dyno hp increase. I am probably running in the low 8's now. (0-60 lol)..shit..actually, thats probably not far from the truth hehe.

Chappy, check out that page and do ALL of those mods. If you need help, lemme know.

[CPMaverick]

The guy is an idiot and the page is bullshit.

Flapper valve mod

Why it's stupid: The valve is designed to come on when the torque transitions, so in theory it should give you no power increase to disconnect it, all you lose is low end torque.

Does it make your car faster: No way. Does it make it slower, not in s straight line, but it loses whatever low-end grunt a Honda can have, and the fuel map is all fucked up when its' supposed to be in closed mode

EGR Mod

Why it's stupid: It increases fuel economy and emissions by opening under steady and closed throttle. With exhuast gases there is less room for air and fuel, so less fuel is added. So disconnecting it makes your car run lean at closed and steady throttle, because the ECU still thinks its open

Does it make your car faster; hell no! it's always closed during any sort of acceleration anyway.

Fuel Pressure Mod

Why it's stupid: It makes your fuel delivery non-linear by not referencing to intake vacuum

Does it make your car faster: hell no! It only increases fuel pressure at idle or decelleration, wide open throttle fuel pressure is still exactly the same.

Ignition Timing Advance

Works. No big secret.

Coolant Bypass Mod

Might make a slight difference, but his 8 hp claim is ridiculous. Try 1 hp.


Injector Mod

Why it's stupid: Oh my god. Who would be dumb enough to remove the trash screens from thier injectors.

Does it make your car faster: hell no! It does absolutleyfucking nothing! The injector works on pressure & pulsewidth, removing the screen does not change either, no more fuel.


Airbox mod

Might work, dpeends on how you do it. He had no pictures. If you get more engine bay heat to the filter, it might be worse.

Crankcase Filter Mod

Why it sucks: You need to have a vacuum source in the crankcase. If you disconnect it, you are going to build pressure. hello oil leaks.

Does it make your car faster: hell no! In fact crankcase vacuum has been known to increase performance slightly.

Swaybar Mod

His description is hilarious. Yes my son, removing your sway bar makes the car corner much better. :lol:

Dustshield Mod

Yeah, that gets a lot more air to the brakes, because he really needed that :lol: Meanwhile he's getting road scum all over his car's engine bay and door jams.



Sometimes the internet sucks big time. any idiot can act like he knows something, and people will copy him blindly.




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[Jess]

well nevermind then. He was known on hondaprelude.com for someone who was good with prelude motors and had a pretty fast one. I just figured he knew what he was talking about. The EGR and coolant bypass make sense to me, but i guess i dont know the inner-workings of motors nearly as much as CPMaverick.

I'd like to get to the track friday just to see if there's a difference in times. I know my 'before' time, so i have something to compare. It could be psychological, but i swear it feels faster. guess i'll see.

[CPMaverick]

The timing advance might be it.

He's got 'baseline' runs to see how what the difference was. He gaine like .5 MPH. You can't go by that, you can't even get back-to-back runs within .5 mph too often.

if you do attempt to test it before and after, make 5 runs with each way, not just one. And compare MPH, not ET.

[maxpsi]

:lol: I helped Justin cut off the dust shield from around one of his brakes. Of course he did it thinking that was the source of the pinging sound when in actuality it wasn't. Is the dustshiled really that effective in keeping out dust. About the airbox mod, I think he was talkin about taking out the stock resonator. Before I got an aftermarket CAI, I took out my stock resonator and threw in a K&N replacement filter. There was a slight difference. I don't think it is effected that much by engine bay heat due to its location behind the headlight. The Comptech icebox looks it follows the same design as stock. I agree with you Charlie. Most of that stuff sounded a little bit ridiculous.

[Synerain]

I agree with you in saying that some of these mods may be pointless.

However, some are functional and I actually ran better times at the track due to some of these.

[WiggiE]

Charlie, you hit it right on the head with your explantion of the free mods.

However, some are functional and I actually ran better times at the track due to some of these.

Which ones are funtional that Charlie listed that weren't??

The timing advance, cooling bypass, and airbox mod are the ONLY ones that you will CAN get a gain from.
To do the airbox mod correctly, you need to chop open your resinator and glue a piece of piping between the two pipes in there. Then reinstall your resinator. If you simply remove your resinator you WILL lose HP. Honda knows airbox designs very well.

[WiggiE]

To add one more thing:

The coolant bypass mod will only keep your IM from so-called "heat-soaking". It wont' make you faster, but it will let you run back-to back runs without losing trap speed.

Just remember, you can freeze your throttle body shut and have hard starts in cold weather. If you drive your car in Auburn, you shouldn't have any problems. But, further up north you will.

[Jess]

To add one more thing:

The coolant bypass mod will only keep your IM from so-called "heat-soaking". It wont' make you faster, but it will let you run back-to back runs without losing trap speed.

Just remember, you can freeze your throttle body shut and have hard starts in cold weather. If you drive your car in Auburn, you shouldn't have any problems. But, further up north you will.

Scott - If the IM DOES stay cooler due to that mod, wouldnt that mean that air goin in the motor would be cooler, therefore more compressed & oxygen rich per volume = more hp,

Or - am I leaving something out? Or does the IM get enough heat from the motor to make any gains that would be gotten from this mod null and void once the motor (and therefore IM) reach running temp?

I took a run-on sentence course in school ;)

[WiggiE]

Scott - If the IM DOES stay cooler due to that mod, wouldnt that mean that air goin in the motor would be cooler, therefore more compressed & oxygen rich per volume = more hp,

In theory, yes.

Or - am I leaving something out? Or does the IM get enough heat from the motor to make any gains that would be gotten from this mod null and void once the motor (and therefore IM) reach running temp?

You engine bay will heat the IM already. The differences between the coolant line heating your IM and your engine bay heating it, is going to be insignificant (Engine must be to full temp, of course).

When this mod actually has an advantage is back-to-back runs on either a drag strip or a dyno. This is where the engine is being put under major load for a repeated amount of time. Load on an engine creates heat. The temperature in the coolant system gradually gets hotter and hotter, heating up the IM. Where the engine bay doesn't get much hotter due to air running through it.

To make this mod fully worth it, Hondata makes a IM gasket that shields the heat from the IM and closes off another coolant port that runs directly from the head to the IM.

Link to Hondata IM gasket: http://www.hondata.com/heatshield.html

[grizoove]

Just a quick question on the IM heat shield thingie. Hondata's site says that it has and application for the D16Z. My question is would the same piece fit the D16Y series. I have heard before of people putting the Y8 IM on the Z6...just curious.

[WiggiE]

Just a quick question on the IM heat shield thingie. Hondata's site says that it has and application for the D16Z. My question is would the same piece fit the D16Y series. I have heard before of people putting the Y8 IM on the Z6...just curious.

To be honest I have no idea. Hopefully OB will jump in here and answer that. You could always email Hondata.

[Jess]

Thanks for the info, that makes sense.

[WiggiE]

Thanks for the info, that makes sense.

No problemo!

[1 Bad 68]

Just a quick question on the IM heat shield thingie. Hondata's site says that it has and application for the D16Z. My question is would the same piece fit the D16Y series. I have heard before of people putting the Y8 IM on the Z6...just curious.

To be honest I have no idea. Hopefully OB will jump in here and answer that. You could always email Hondata.

:?: I would put money on yes, and if it doesn't, I can make it to where it does. :)

[jdmsol]

Just a quick question on the IM heat shield thingie. Hondata's site says that it has and application for the D16Z. My question is would the same piece fit the D16Y series. I have heard before of people putting the Y8 IM on the Z6...just curious.

from everyone i've spoken to the answer is always the same...YES! hope this helps.

http://www.Honda-Tech.com