Turning up the BEGI boost?

smp3000

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Contributor
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04' EVO VIII
Has anyone who owns a BEGI kit actually turned up the boost? I know how to do so- but it looks like it's nearly impossible without first taking the downpipe off.

Was anyone able to modify the boost without taking everything off first?

(I know I should get a boost controller, and will....One day, hehe.)
 
Taking the turbo off is easy. You can leave the manifold on the head, and disconnect the downpipe from the turbo. To take the turbo off the manifold, you will need a 17mm wrench for the 4 nuts holding the turbo to the manifold. Flip the turbo over:

turbo.JPG


Unlock the lock nut, and follow the instructions in the installation manual:

Cited From BEGI Installation Instructions

If boost needs adjusting, loosen the nut on the wastegate actuator pushrod. Remove the circlip and turn the end fitting. Shorten the pushrod to raise the boost. The pressure change is approximately 1/2 psi per revolution. Do not attempt to run more boost than 8 psi. The fuel system will not supply adequate fuel flows for operation greater than 8 psi.
 
Another option is a boost controller. Not sure on the mechanics of such a device though. Will research!
 
LinuxRacr said:
Another option is a boost controller. Not sure on the mechanics of such a device though. Will research!

Heh I know who the gopher is on turbos now =P
 
Boost controllers are simple and there are two basic designs.

Manual (simple to use and install, they work well);
www.turboxs.com
www.turbosmart.com.au

Or here is a pdf for the turbosmart boost controller;
http://www.turbosmart.com.au/PDF/Fg-gbcv.pdf


Electronic (many more features, learning, easy to adjust)

http://www.apexi-usa.com/electronics_savcr.asp
http://www.hksusa.com/products/?id=1651
http://www.greddy.com/products/electronics_frame.htm

Some of the electonics have features like scramble boost (short term high boost), two or more saved boost levels, gear based boost control, and built in boost and duty cycle gauges.

Jeff
 
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Linux,

Is it super messy to take off the turbo? With the oil line and the oil return line?

any tips on how to keep the extraction clean?
 
Equinox said:


Heh I know who the gopher is on turbos now =P
I was just about to say that....I've been really busy at work and havent been haunting the threads as I normally do. Good work, Patrick, and fast! I gotta stop trying to actually do some work, and just get back to surfing this site. I work for the government, though, so I suppose you crazy people want your tax dollars to go to work on real stuff, not me surfing the net.
 
As Mazda T stated another real good unit is the greddy TVVC manual boost controller. The Greddy profec B is the way to go on the electronic ones, the profec A to put in a nice way is a piece of s***.

The HKS units are very nice but they are very difficult to adjust because the knob is so sensitive and the turbo X/S manual controller work well, I also have experience with these however it is a bit a pain in the ass to adjust boost with the allen key and opening the hood everytime you do it......but they actually work well:)
 
smp3000 said:
Linux,

Is it super messy to take off the turbo? With the oil line and the oil return line?

any tips on how to keep the extraction clean?

Leave the lines attached. No need to take off any lines. Just undo the nuts holding the downpipe to the turbo (use 13 mm long socket), take off the 4 nuts holing the turbo to the manifold (use 17 mm wrench, and flip it over. Follow the instructions.
 
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I say get a boost controler. You can more easily adjust the boost with a boost controler than taking the turbo off everytime you want to do it. I was using a dual stage boost controler. It has a switch intide the cabin that you flip when you want more boost. You can set it for two different settings, a low one for daily driving, then with the flip of a switch, you can have higher boost for racing and such. You can even flip it while you are in the throttle.
 
I say get a boost controler. You can more easily adjust the boost with a boost controler than taking the turbo off everytime you want to do it. I was using a dual stage boost controler. It has a switch intide the cabin that you flip when you want more boost. You can set it for two different settings, a low one for daily driving, then with the flip of a switch, you can have higher boost for racing and such. You can even flip it while you are in the throttle.
Ben was that the turbo X/S dual stage controller? How did you like it?
 
Yeah I think I will get one... So I can run at 6 on driving days, and 8 for track days. Or something comparible.

Also, during hte summer out here when it's 120 degrees, I don't think it'd be a good idea to A.) Run high boost, or B.) Have to go outside open the hood and take off the turbo at noon in 120 degree weather.

I think I'll go with something Nice, but cheap. More than likely a manual device. Any certian manual one I should look for?
 
The manual one that is really really good is the tvvc controller from greddy. You can control this from inside your cockpit. I can get you a real good dela on these. If you are interested PM or email me.
 
Yeah, it was the Turbo XS Dual Stage. I liked it. It had some spikes sometimes, but they werent that bad. One time it spiked to 9psi, but nothing to have a heart attack about. I imagine it would be better with an external wastegate.
 
I like the mechanical. I don't ever have to adjust it and it alot more robust then the damn electronic controlers. If I don't want to use 8 PSI I dont' simple.
 
smp3000 said:
Yeah I think I will get one... So I can run at 6 on driving days, and 8 for track days. Or something comparible.

Also, during hte summer out here when it's 120 degrees, I don't think it'd be a good idea to A.) Run high boost, or B.) Have to go outside open the hood and take off the turbo at noon in 120 degree weather.

I think I'll go with something Nice, but cheap. More than likely a manual device. Any certian manual one I should look for?

Oh come on...Just go get your oven mits on and take the dang turbo off!:p
 
Greddy Profec B

Similiest to dial in and adjust, easiest to install, its cheap, you don't have to have a dynoe to properly dial it in and its one of the best controlling electronic boost controllers on the market. . . .

For a low to midboost street application, the Profec B is the only way to go in my opinion.
 
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