pureboiracer 0 Report post Posted May 10, 2010 ok. so i found out why my racecar is not running too flash.. i pulled out the spark plugs and they have been corroding away. turns out the car is over fueling. i had a look at my injectors, found 5 blue ones and 1 orange one. could anyone tell me the flow rates of all the different colour injectors?? i have searched... also any ideas on how to lean it out? it is a motronic 1.3 m20b25 with a chipped ecu, mild cam, cia. have upgraded to iriduim spark plugs that are abit hotter so should help.... any ideas would be cool... cheers oli Quote Share this post Link to post Share on other sites
CamB 48 Report post Posted May 10, 2010 Any idea why its overfueling? It could be a faulty sensor(s). Quote Share this post Link to post Share on other sites
Eagle 1680 Report post Posted May 10, 2010 I know stock M20B25 14lb injectors are blue but not saying much. Should have part number on the injectors which you can google. Quote Share this post Link to post Share on other sites
pureboiracer 0 Report post Posted May 10, 2010 Any idea why its overfueling? It could be a faulty sensor(s). umm im not too sure. think chip may have something to do with it.. or mabey the air fuel adjustment is all up the bend. Quote Share this post Link to post Share on other sites
_ethrty-Andy_ 2136 Report post Posted May 10, 2010 what chip do you have? my car ran a bit rich when it was chipped, so if its the same brand its probably a good guess that it is that Quote Share this post Link to post Share on other sites
pureboiracer 0 Report post Posted May 10, 2010 umm i dont know the brand tbh... yeah that is my guess.. does anyone know which way to turn the allan key on the afm for richer or leaner? Quote Share this post Link to post Share on other sites
_ethrty-Andy_ 2136 Report post Posted May 10, 2010 who did you buy it off? Quote Share this post Link to post Share on other sites
pureboiracer 0 Report post Posted May 10, 2010 got it off john. he used to have it in his racecar. when he had the m20 in it. Quote Share this post Link to post Share on other sites
_ethrty-Andy_ 2136 Report post Posted May 10, 2010 (edited) Yeah same as mine mate. Wasnt Not nessecarily from his race car, he used to sell them. Edited May 10, 2010 by ethrty320 Quote Share this post Link to post Share on other sites
pureboiracer 0 Report post Posted May 11, 2010 ^yeah i know.. so i think that may be the culprate but dont really want to take it out so just want to make sure all the mixture adjustments are all good and find out what injectors i should have. Quote Share this post Link to post Share on other sites
_ethrty-Andy_ 2136 Report post Posted May 11, 2010 If both your 325i's are running the same software you could take it out of your DD and put it into your racecar (or other way round.. sorry forgot which way were are talking) and see if it goes away. At least it prooves it is that.. Quote Share this post Link to post Share on other sites
pureboiracer 0 Report post Posted May 11, 2010 yeah i will do that when i get a chance to.... but really need to sort out the injectors as they are mix and match... Quote Share this post Link to post Share on other sites
