Epic2112

I'm going to be installing the manual boost controller I bought from Lindsay soon, and I'd like the **** to be under the radio (or maybe in the glovebox, I haven't decided yet). So my question is where to I bring the vacuum (or boost) lines through the firewall? I'd like to avoid making any new holes, but of course I have to make sure the lines don't get pinched. Where have you guys that have done thise routed the lines?

hosrom_951

Just get a T joint and take a line from the DME/KLR. Simple and easy to get to, should take you few mins.

Sam Lin

Why are you installing a boost controller in the cockpit? You can't adjust boost (unless your engine management scales fuel based off boost, like the Link can be set to do) without adjusting the air/fuel ratio. To keep a correct a/f ratio you need to simultaneously adjust the fuel maps. Without that you're just asking to blow your engine.

Sam

hosrom_951

Sam Lin: You registered with rennlist in 2003 and that was your 2003rd post

951power

Behind the battery there is a rubber-cap you can use. This one leads straight on top of the glovebox
Just drill a hole!! from the engine bay to the battery box, but beware of the brake lines!.

Epic2112

Sam, I'm not sure I understand what the problem would be. My chips are set at 18psi, and since I still have stock injectors that would be a problem, so I was going to install the MBC when I install the chips, and keep the boost turned down to 14 psi. Wouldn't that just be the same as if I was driving and keeping the car off of max boost with the throttle? The problem should only be if I turn the boost up too high, right?

Pauerman

Epic,

If your chips are mapped for 18 psi at WOT, you will be running very rich at 14 psi.

Like Sam said, unless you have a piggyback or standalone management that stores specific fuel maps for specific boost settings your WOT A/F values are going to be wrong if you run less than 18 psi.

If you're running 18 psi chips with a stock turbo / stock wastegate setup, the arguement is that you won't be able to sustain this amount boost and that your boost will drop off as you get closer to redline. Danno has explained to me that his 18 psi K26 chips account for this drop off in the fuel mapping.

HTH

Vic

Epic2112

Whelp, that settles it then, I guess I'll buy me some new injectors so I can run at 18psi. At least that decision was made easy. so, I guess I don't understand what the point of having a MBC is. If it isn't used to turn down boost, what is it for?

Sam Lin

It's used to set boost to the level you want it at, where air/fuel is perfect. As I said earlier, unless your engine management can read boost and scale fuel to match, it's NOT for on-the-fly changes. If it can, however, then an in-cockpit boost controller is not only usable, but quite useful and fun.

Sam