all answered in pm

 

CincyTT YOU RULE!!!, this week I put in the boost gauge (prosport) $45 shipped , montored the factory boost i maybe got 11 psi once it would stay around the 10 mark mostly. ran like that for a day, then put in the diode mod 4.3Volt zenner $2. didnt notice anything except i may have seen a split second spike at 12psi once, but most important no CEL. ran a few runs for about 1/2 hour. all good. then I installed my turbonetics boost controler VBC 50 is the model $50 . i put it inline with N75took the hose from the N75 ran to input side of MBC ran a new hose from MBC to the N75. clamped it all down and started off, in the middle i was getting a constant 12psi, but the turb spooled much faster and the car was very noticably faster (NIGHT & DAY)then 1/4 turn at a time I kept adjusting the controller , it took quite a while but i got it to where it runs 16-17PSI !CONSISTANTLY!!! WOW is all i can say This is a totally different Beast. Thanks for all the help, I would like to say I have read how some people have problems with similar setups, I chose the Turbonetics MBC because it uses a diaphram Not the spring and ball set up, i read alot about MBC's and they say the spring rate changes with temp outside which makes sense. there are definatly cheaper controllers out there I was tempted to use a $10 one off e-bay. but since this is responsible for helping the N75 i though better not. Who knows it may have worked fine. you can also lock your setting by pushing the **** down which i liked as well. I would also state i used a Zenner diode not a house brand,. from my electronics expierence there are quality differences, not that this is a cost issue on this small part but you may be tempted to use something else due to ease of getting another brand. I am extremely satisfied with these mods, and they will hold me over till the next upgrade. I cant imagine a chip giving me much more. This is not my first modded car I had a VERY modded Toyota Supra twin turbo years ago. and I am 31 years old .I'm not trying to talk you out of going the chip route, I'm sure it works very well, It also takes the high speed cut out off as well on many of the brands, and it does other tweeks which this can not do, and is very easy to have done, and you have tech support from your retailer, Also there is little time to invest, I invested Many hours into researching the different products and info available. and your time is worth something, But ther are options, hopefull this helps someone else out. Thanks Wayne

 

Sweet, sounds like you are one of the first here on audiforums to do this mod and post about it.

 

I had a idea last night, I have a old G-TECH PRO which I used when I had my Supra, I rember running it while I was at the track, and it would be nearly identical to my time slips. It needs new suction cups and I need to try to find the instructions, I rember it being a pain to set up, I'm going to try to get some today. I will run it the way I have it setup now and take the MBC off, since i didnt cut any hoses. and see what it has to say . go back to how it is now. make sure everything is the same. Now I realize how much I miss playning with my toys. I will also try to post some pics do you have to have a host to post here ?

 

cough...cough...Just look at the first few post and see why I dont take the time to do a write up or make an effort to explain it to the rest of the forum.

But wayne, im glad your happy with your setup and i am much happier you did it safely by doing the steps i suggested. I also have been suggesting people with stock turbos to stay away from the ball and springs mbc and use a bleed type mbc's since they are much smoother with the small turbo. But do have fun and be safe.

And if anyone else wants info/help you can either pm me and now wayne.

 

CincyTT definatly deserves the credit, he helped me out alot, on the vw vortex forum no one really says what exactly to do, or use, is a"if" type of thing, And on Audiworld they shake their heads at this, I asked pretty much the same things over there they all suggested only to get a chip. I knew CincyTT had done a similar setup and had worked for him, and he helped me nail down some of the variables. which helped a ton. Rember he had already done this, so the only difference in his setup and mine is the actual brand of MBC. THIS IS HIS SETUP. I just wrote about my expierence to help inspire someone else to maybe give it a try, and that there is a option for the first mod other than a $500 chip. I had around $100 invested in everything with the boost gauge. Also rember you should have a boost gauge with a chip setup also. which brings the chip/flash and boost gauge combo in at around $550. Is this MBC setup better performance? NO. you definatly get more "goodies" out of a chip/flash. Does this setup give you more HPover stock? YES, is it a noticable difference? HELL YES. Does it cost alot? NOPE. The way I figure if I change my whole setup and do a big turbo and some other crazy things with a custom ecu program and god only knows what else, the only cost I'm out is the MBC $50, But I'm enjoying it now and that is worth more than $50 by far, That hardly get's dinner for 2 now a days and you only enjoy that for a hour. In my humble opinion this is a very good mod if you are inclined to work on your own car,that may be enough for some, and for others it is a good starting point, definatly worth the time. Actual time of installation was about hour and half for the gauge, 30 minutes for the diode, and 45 min for the MBC. and I'm not a fast worker. Thanks again and dont hesitate to ask me any questions, Wayne

 

how and where do you install the diode?

 

Simply put, it installs in your map sensor wires by soldering the diode between 2 wires.

These pics are from a more technical install but still apply.

 

I wouldnt say performance is that far behind a chip, Hell within a few hp/ftlbs from some chip tuners.

4.3v diode, mbc at 19 psi, and CAI.



From here http://forums.vwvortex.com/zerothread?id=2355262
And more here http://forums.vwvortex.com/zerothread?id=1782202

 

Yeah I sodered the diuode in place between the purple gray and orange blue(looks more brown/blue to me but everyone refers to it as orange/blue) wires stripe side of diode towards the purple gray wire, tucked it back into the loom and it looks factory, Cincytt I agree the actual power produced by doing this has to be very close to chip performance, I was saying you get more features from a chip. like being able to switch between programs via the cruise control, and taking the top speed limiter off, i also believe some remove the rev limiter, and others offer a valet mode. also I believe the revo offers the sps controler which lets you change settings via the computer(at even more cost), if we want to turn our boost down (for some unknown reason) we have to pop our hood and give the mbc a turn. These features do give a chip/flash a better "performance"overall, is it worth $450+ more?? I definatly dont think so... that is why I went this route. I was willing to give up those small features in exchange for a much cheaper option. that gave me nearly the same everyday results as a chip. And I can change the whole setup later without feeling like I threw $500 away. Because really how often are you giong to swithch between programs after the first month? Very rarly. That is what I ment by "GOODIES" looking at your Quote I should have worded it differently. ....It Should have read... .........Is this MBC setup similar performance? I think so.........