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#1
02-19-2007, 01:03 AM
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map bypass missing link
ok so i know this might be a little outta place but im gonna turbo my civic and i know i need a missing link map sensor bypass that only allows the sensor to see vacuum. but my question is which style do i need ive see 2. type b being the one for our cars. http://cgi.ebay.com/ebaymotors/Blox-...QQcmdZViewItem
or style a http://cgi.ebay.com/ebaymotors/MAP-B...QQcmdZViewItem being more for the 92 on up cars. but i dont really know which one i need cause you cant believe everything you read. and also an help as to were which one goes and how it works. (mainly style b) would help alot.
__________________
06 cbr 600 f4i 91 civic hatchback. 96 nissan pathfinder 
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#2
02-19-2007, 01:26 AM
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Re: map bypass missing link
Dude just use a small check valve.. why pay for a block of aluminum thatll do the same thing?
__________________
Cheap, Fast, Reliable..Pick two  Current project: Rio Red 91 hatch. A6/Z6 build, Hondata S300, Tokico illumina/Ground Control. "I'd rather run 12's on steelies than 15's on rotas."
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#3
02-19-2007, 11:36 AM
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Re: map bypass missing link
when i type is a search for a check vavle those little blocks of aluminum are all that come up. maybe you should enlighten me as to what you talkin about.
__________________
06 cbr 600 f4i 91 civic hatchback. 96 nissan pathfinder
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#4
02-19-2007, 01:14 PM
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Re: map bypass missing link
Mmmm kinda like this maybe? lol
__________________
Cheap, Fast, Reliable..Pick two Current project: Rio Red 91 hatch. A6/Z6 build, Hondata S300, Tokico illumina/Ground Control. "I'd rather run 12's on steelies than 15's on rotas."
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#5
02-19-2007, 01:21 PM
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Re: map bypass missing link
how does it work might i ask. the engine isnt exactly my for-tay if you will. im more based on the body side of things.
__________________
06 cbr 600 f4i 91 civic hatchback. 96 nissan pathfinder
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#6
02-19-2007, 04:24 PM
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Re: map bypass missing link
Its a one way valve, allows only a vacuum, positive pressure will close the valve. However now that I think about it, unless the valve leaks (actually hoping it does) when your engine pulls max vacuum and then goes positive it will hold the pressure at the maximum vac. Which granted, wont throw a check engine light, like you want, but wont let it read perfectly eaither. Basically all the missing link is doing as well.
__________________
Cheap, Fast, Reliable..Pick two Current project: Rio Red 91 hatch. A6/Z6 build, Hondata S300, Tokico illumina/Ground Control. "I'd rather run 12's on steelies than 15's on rotas."
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#7
02-19-2007, 05:14 PM
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Re: map bypass missing link
ahh just a one way valve basically. thats alittle bit more sense.
__________________
06 cbr 600 f4i 91 civic hatchback. 96 nissan pathfinder
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#8
02-19-2007, 06:52 PM
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Re: map bypass missing link
Literally a one-way valve lol.
__________________
Cheap, Fast, Reliable..Pick two Current project: Rio Red 91 hatch. A6/Z6 build, Hondata S300, Tokico illumina/Ground Control. "I'd rather run 12's on steelies than 15's on rotas."
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#9
02-20-2007, 12:11 AM
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Re: map bypass missing link
so whats the deal with aluminum ones just fancy. and also the ones for 5th gen on up dont seem like that.
__________________
06 cbr 600 f4i 91 civic hatchback. 96 nissan pathfinder
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#10
02-20-2007, 01:01 AM
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Re: map bypass missing link
The '92 and up ones (style A), goes between the throttle body and the map sensor. Where I believe the other style (style B) goes between 2 hoses, 1 of which is attached to the map sensor. Honestly I'm not all that familiar with the 4th gens enough to know how their map sensors are, other than mounted on the firewall.
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#11
02-20-2007, 06:59 AM
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Re: map bypass missing link
They are mounted on the firewall and just fed with a rubber tube, no biggie and very easy to put something inline. while the 5th gen civics have the map mounted to the TB requiring you to bolt the aluminum ones in between.
__________________
Cheap, Fast, Reliable..Pick two Current project: Rio Red 91 hatch. A6/Z6 build, Hondata S300, Tokico illumina/Ground Control. "I'd rather run 12's on steelies than 15's on rotas."
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#12
02-25-2007, 12:09 AM
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Re: map bypass missing link
Why don't you chip your ecu so you don't have to put the check valve on it - the stock map sensor will read up to 11psi of boost (i think it's 11) and with a stock ecu chipped you don't have to add anything except injectors. Why bother faking your ecu into reading something that isn't true. I'd prefer my ecu know how much boost there is so it can help me tune and adjust my fuel maps and timing maps accordingly.
__________________
1991 Sedan LX Auto (Auto2Manual / MPFI / OBD1 conversions complete) www.naytontech.com :: youtube.com/naytontech
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#13
02-25-2007, 10:36 AM
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Re: map bypass missing link
Here is an idea, since your stock map is good for 11 psi, why not forget about a check valve, or missing link all together?
edit, 4g4d is on the ball.
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#14
02-25-2007, 09:41 PM
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Re: map bypass missing link
because im using a apexi neo vafc controller because its been theen chipping and its easier to tune with. and well im gonna need it for the mini me built motor.
__________________
06 cbr 600 f4i 91 civic hatchback. 96 nissan pathfinder
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