Leaning out after 10psi ??? any thoughts?

http://www.bosch.com.au/content/language1/html/4596.htm
bosch good quality stuff

Heres a Hondata Map Sensor.
http://hondata.com/4barmap.html

Can also get the Omnipower ones too.
http://www.omnipowerusa.com/product.asp?P_ID=133

surprised your tuner didnt pick up on that......
guess he aint getting paid to build a working motor

stock map will read to 11psi,u r losing resolution on the sensor & the ecu just dont know what fuel to dish out,get a 3bar MAP now if u want to push out to 20psi

if u r going to 20psi,upgrade the pump wiring,for the cost of 3m of wire & an hour to install it,be better than having your tuner sitting around at $XXX/hr scratching his head again,expensive people to have standing around goin thru your setup tryin to solve little issues.
stock honda wiring was not designed to spin a high pressure pump & keep it at a decent working voltage,the pump will either fail to deliver what u want from it or u will prematurely age the pump by overworking it.

wont i only need a 2bar map sensor considering 2bar is 29.4psi (1 bar = 14.7psi x 2 = 29.4psi)

3 or 4 bar is a little excessive. lol 4bar is 58.8psi... i could take my eg to the moon if it could run that amount of boost.

MAP is manifold "absolute" pressure,meaning read from perfect vaccuum=0psi

atmospheric is already 14.7 psi of your map sensor=1bar

14.7psi boost=atmo + 14.7=2 bar
29.4psi boost=atmo + 29.4=3 bar

u can get a 2.5bar,but thats not leaving u much headroom ontop of 20psi,so id just get the next size,but thats up to u.

Quote:

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Originally Posted by CRXer

MAP is manifold "absolute" pressure,meaning read from perfect vaccuum=0psi

atmospheric is already 14.7 psi of your map sensor=1bar

14.7psi boost=atmo + 14.7=2 bar
29.4psi boost=atmo + 29.4=3 bar

u can get a 2.5bar,but thats not leaving u much headroom ontop of 20psi,so id just get the next size,but thats up to u.

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Ahhh k,

yep so i will need a 3bar map sensor.

Quote:

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Originally Posted by CRXer

MAP is manifold "absolute" pressure,meaning read from perfect vaccuum=0psi

atmospheric is already 14.7 psi of your map sensor=1bar

14.7psi boost=atmo + 14.7=2 bar
29.4psi boost=atmo + 29.4=3 bar

u can get a 2.5bar,but thats not leaving u much headroom ontop of 20psi,so id just get the next size,but thats up to u.

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So, if the stock MAP can only read upto 10-11psi, that would make it atmo + 11 = 25.7psi, whats that about 1.5-1.8bar?

stock MAP is a 0-5Volt sensor,
atmo works out to be about 3V,so u got 2V of boost left on it.

heard figures of 1.8bar & 11psi being tossed about all the time,never tried it myself,so couldnt really confirm any of them.

so was it the injectors??

if so ive now know of 3 sets of RC injectors fail in a span of 2 weeks including my own

Quote:

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Originally Posted by Riced_Civic

so was it the injectors??

if so ive now know of 3 sets of RC injectors fail in a span of 2 weeks including my own

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Nah well the injectors seem to be running fine upto 10-11psi but im the stock map sensor fails around that time so im thinking it has to be that.

ahh kk

just something ekse for safe keeping i always try n use -
make sure the fpr vac line is independant - ie nothing else is running in line with it
that way at least the fuel pressure vac line shouldnt have any interferance
good luck