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-   -   all my sensors are acting up, any idea? (https://www.homemadeturbo.com/forced-induction-7/all-my-sensors-acting-up-any-idea-10202/)

luderone 10-02-2003 01:56 PM

Re:all my sensors are acting up, any idea?
 
yea I have an h23 but there not vtec, I think the 345cc are h22 vtec, I have the afc -40 across the board and still throwing map and knock sensor, but the car makes no pinging noise. and after you get by the sputtering, the car spools,pulls and runs good. its just like 3500 to 4000 rpm. is when the rough running starts. but when the turbo spools, no sputtering. since I did swap the h23 in the old f22 spot, and the f22 had no knock sensor. there is a spot I think, right above the oil filter where it feels like theres a plug there, but I have no wires to go to it. is that where the knock sensor should go?

88crxSi 10-03-2003 07:39 AM

Re:all my sensors are acting up, any idea?
 
im not sure about the knock sensor.

when does boost start to kick in on your car?

if you start adding fuel before it starts spoolin' then that will run super rich and sputter..


example...
RPM PSI AFC
1k 0 -40
2k 2 -37
3k 4 -35
4k 6 -33
5k 6 -32
6k 9 -30

kinda like that..

you canb't just dump -30% from 2-8k RPM with different levels of boost. This is why you need to dyno tune w/ a wideband o2 for accuracy.

quickcrx702 10-03-2003 01:22 PM

Re:all my sensors are acting up, any idea?
 
hey bro, if (and only IF) your base injector flow is 345cc, then i would have my settings something like this...

1k -23% (346.5cc's, only 1.5 more than stock)
2k -20%
3k -18%
4k -16%
5k -15%
6k -14%
7k -14%

im just taking a guess after the 1k setting, but im just trying to give you an idea of where you need to be. depending on the type of turbo that you are using(BIG or small?), you may want to change those values a little bit. for example, i wouldn't richen the fuel mixture much before the turbo starts spooling. if it starts to spool at 3k, thats where i would start to richen the mixture. if it started to die out in the higher rpms, i would stop raising the fuel. but like crx88si said, the dyno is the only real way of finding out exactly what settings are best for you. good luck my friend.

oh ----...my bad. when i first put the settings up, i had my math wrong. its correct now. however, with these settings, im not sure it will be negative enough to please your map sensor. you MAY have to use larger injectors.

luderone 10-03-2003 04:43 PM

Re:all my sensors are acting up, any idea?
 
thank all of you for all the help you have given me. I will take it to a dyno as soon as I find one that know what there are doing. I regapped my plugw yesterday, they were all fucked up, one was at .20 one was .35 the other two were like .60. so i gapped them at .40. ran the car no sputtering, no engine light but I only ran the car a little. so do you think teh plugs could have caused my problems. thanks ray

quickcrx702 10-03-2003 06:20 PM

Re:all my sensors are acting up, any idea?
 
that was part of your problem. the settings on your afc also posed an equal problem. before when you had those funky settings (+1) it probably compounded the problem. if i were you i would still try messing with your settings and seeing what works best for you. but yeah, your plugs seemed pretty fucked up... good catch by the way.


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