Induction Kit for a ’96 323i Coupe

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   Quote: Originally posted by RichB on 06-March-2003

I'm trying desperately to find out what difference there is between the E36 325 and the E36 which means that we "only" have 170 bhp and the lucky 325 owners have 192bhp.  Same engine capacity etc.  The 323 is newer and "detuned".
So it SHOULD be easier for us to tune our 323s in the first place.  But 323s are neglected over the 325 for tuning parts generally.  Is it a question of ECU mapping or something else?  Any ideas Grimesj, or anybody else???

  If it is just a case of ECU mapping and cams etc. the BMW ECU's have the facility to be remapped up to 11 times, it might be possible to remap the ECU with 325 perameters.
I know with my 325 I went to see my friend who is the foreman at our local dealer and he said if I did modifications such as induction and exhaust kits he could put the 525 software into my 325 ECU throwing in a little extra fuel and giving more torque lower down as the ECU thinks its pulling a heavier car.
Probably best for you to talk to either Active Autowerke or Turner Motorsport in the states as they seem to tune more 323's there.

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kickerbimmers Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 02-May-2003 Location: United Kingdom Status: Offline Points: 31	Posted: 04-May-2003 at 09:08
	Quote: Originally posted by RichB on 06-March-2003 I'm trying desperately to find out what difference there is between the E36 325 and the E36 which means that we "only" have 170 bhp and the lucky 325 owners have 192bhp. Same engine capacity etc. The 323 is newer and "detuned". So it SHOULD be easier for us to tune our 323s in the first place. But 323s are neglected over the 325 for tuning parts generally. Is it a question of ECU mapping or something else? Any ideas Grimesj, or anybody else??? If it is just a case of ECU mapping and cams etc. the BMW ECU's have the facility to be remapped up to 11 times, it might be possible to remap the ECU with 325 perameters. I know with my 325 I went to see my friend who is the foreman at our local dealer and he said if I did modifications such as induction and exhaust kits he could put the 525 software into my 325 ECU throwing in a little extra fuel and giving more torque lower down as the ECU thinks its pulling a heavier car. Probably best for you to talk to either Active Autowerke or Turner Motorsport in the states as they seem to tune more 323's there.

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RichB Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 11-January-2003 Location: United Kingdom Status: Offline Points: 73	Posted: 08-May-2003 at 18:45
	Actually, I'm older and wiser in the bimmer world since that was posted - differences between the E36 323i and 325i are as follows: 1 323 has an Aluminium block, 325 has Steel block 2 323 has restricted throttle body and traction control thingy 3 323 has single tail-pipe exhaust, 325 has twin 4 323 has a taller gearing ratio, meaning a higher top speed but slower acceleration 5 ECU Mapping And that is where the 22 bhp diferrence comes from, bearing in mind that they are both 2494cc, 24 valve 6 potters!!!! I thank you

RichB Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 11-January-2003 Location: United Kingdom Status: Offline Points: 73	Posted: 08-May-2003 at 18:50
	As for the 525 chip option, no offence intended, but that suggestion is frankly bollocks and the friendly foreman needs a good slapping - if he want's to improve his 325, then he needs to get a 325 remapping. Period. A 525 and a 325 are soo different, that inbreeding of ECU chips is just ridiculous to suggest. The improvements to the car would all be done by a 325 chip no problem. Only if the car was SERIOUSLY modified, would it then be sensible to consider a CUSTOM chip, not a 525 chip. Rant over.