heres the write-up i used. when youre done, with the left overs and a couple more bucks, you can build a 2nd one, since some of the pieces come in pairs. the tricky part was finding the ball bearing for the valve.

http://www.srtforums.com/forums/f75/...troller-99455/

im telling you, its like the best 10-15 bucks youll spend.

 

Damn... maybe I'll be doing this soon and selling off my Hallman.

 

i was skeptical till i used it, and out of curiosity, i tried it on my 240 and it held 22lbs like a champ with no spike or creep. so far its been on my altima for about 35k miles. 12lbs on a stock block altima engine is pretty insane. i set it up once, tucked it away and forgot about it. its that reliable.

 

The fluctuations in boost are due to the metal (in the spring) slightly changing its properties with a change in temperature. Using myself as an example, my Hallman is mounted to the radiator, so it comes up to temp very quickly. Too, we really shouldn't see boost until the oil temp is up to spec. By the time this happens, the MBC is warm, as well. As such, I see less than 1psi difference going from 90F to 30F. There's elegance in simplicity.

 

mine is mounted in the engine bay on the fenderwell. not sure how much warmth its getting from the engine. i know when its set to 22lbs, that spring is pretty damn compressed. you can feel the drag on it as you tighten the bolt.

 

What fluctuations in boost? I missed something... are you implying that I said my Hallman is fluctuating somewhere? Because afaik, its working fine. My only reason for suggesting I'd get rid of it was to save some coin.

If you're implying that the only reason the boost changes is because of the metallurgy, then I agree with you, as I stated... but I was merely trying to illustrate that your boost controller will need to adjust itself so that it compensates for the changes in the atmosphere. Which... I just illustrated with a whole bunch of maths.

 

It's the subject of the thread.

I was just trying to be helpful and add to the topic. Forget I said anything.

 

Oh no m8... I wasn't trying to flame, I was just confused as to the context of your posts and was trying to clarify. Please continue to add.

 

Maybe I'll move my MBC closer to the block or rad if the heat will help it out on cold days. My Evo is going to see some snow this year.