Unfortunately Thoe99, I have no digital camera, but i will try to explain. Open the hood and find the radiator hose, directly below that is our blow off valve, below the valve is a clamp that needs to be tightened. I placed the ratchet over the nut and was barely able to tighten by moving between the radiator hose and the air intake nozzle. I could only tighten a little bit, then return ratchet to the starting position, tighten a little bit and repeat. You can plainly see the clamp if you look at the hose off the turbo, it branches and a piece of it goes upward, this meets with the plastic blow off valve and the clamp is at this junction. I hope this helps, man what a difference. I just took my wife out and she said, what did you do to the car, I thought you said you were not going to do anything to it yet to which I just and said don't worry honey it was free . Someone try this and post how it feels I am anxious to see all our stock or modded evo's "wake up" more on the top end even more.
Punisher

 

Oh yeah, and my car is still relatively flat in the upper end, like all Evos, so don't get your hopes up too much guys. Yeah this forum ROCKS!!!

Picture, hmm, that's tough. Here's a thousand words:
Find the BOV, then look for 1 small tube and two big ones. Find the little tube running up to the manifold, that's just the signal line to actuate the valve, that's NOT it. Find the larger tube coming off of that that connects to the airbox, that is NOT it either. Then find the other large tube that connects the BOV to the intercooler pipe going to the turbo, THAT's the connection. I believe what the pun said is right, it's under high pressure, and the plastic/rubber connection is kind of a slippery one. Careful not to break anything, but squeeze a ratchet in there and snug it up a little more. Using a phillips head screwdriver won't give you the torque you need to do it.
Good luck!

 

Sorry, I got to the clamp from the top of the car thoe99. l8r
Punisher

 

Between those two posts you should definitely have it now!

 

Well, it worked on my car, can't say I didn't try, sorry eevoo but like my sig says, it is what it is. Maybe mine leaked more?
Punisher

 

Punisher i read through this thread but you never stated whether tightening the clamp actualy worked? Could you confirm that it did work for you? Haha im just joking w/ you. Im gonna try it this weekend and see if it helps.

BTW you should come to our car show at UConn on april 18th. If you want details pm me or check out our site ------> www.uconncarclub.com.

 

I promise nick, it really really works lmao. Sorry eevoo, I was so excited I didn't realize you posted you already did this and it worked for you lol. I would love to come to the meet, will pm you later. By the way I don't know if I said this, but my car pulls so hard I....lol.......

 

great info guys. now we just need to get a digipic and post it on a sticky thread so everyone can benefit!

 

Thanx Punisher and eevo. I'll try this next time I get a chance, since I don't park my car with me anymore. Can you tell me how much I need to tighten it? (I don't know how to answer that descriptively either, hehe).

 

Well guys, I tried the clamp tightening mod.

Seems like the car is a bit smoother from 5000 rpm's on up. It doesn't seem like a HUGE difference, but I'm gonna find out tomorrow when I go to the track.

Thanks again for the insight.

 

I just tightened the clamp. I'll let you guys know what I feel tomorrow.

Also, to make it easier. Take the top portion of the air box off.

 

Cool guys, I hope every one gets favorable results. Maybe I was a little excited earlier, but I think the perfect description is what was just posted "smoother above 5000 rpm" hope you gain some traps and lose some seconds off those et's, good luck. I see some knowledgable and modified people are going to see if there is a difference, great! I am sure I over reacted as I always do, but I know the car pulls somewhat better at high rpms. I seriously think the bovs are fine, it is this damn connection giving people fits with boost loss and high rpm power loss to some degree. Btw Malibujack, that is the same symptom another guy had before he did this clamp tightening and he thought it was the bov, so I hope this fixes your problem. Thoe99 or however you spell it, I would tighten it with the ratchet until it becomes difficult to cause the ratchet to click (kind of hard to describe). Hope that helps.
Stay safe,
Punisher

 

I just clamped mine down tighter. Damn you people... you've got me out in the garage tweaking my EVO after midnight when I have to be to work early in the morning!

It takes all of about five seconds to tighten, if you first pull off the air filter cover and air scoop (5 more seconds). I even took a couple digital pics, but I have no idea how to attach them here.

I was able to tighten both clamps about 1/2 turn each. Personally, I don't think they were loose enough to leak, but I guess I'll find out tomorrow morning. If I notice any difference, I'll post a followup.

Thanks for the tip!

 

 

I can say I had a similar experience of the car holding boost well by keeping the clamps tight.

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