| Author |
Message |
Dave Penhale (Dapper)
Junior Member
Username: Dapper
Post Number: 225
Registered: 4-2002
| | Posted on Monday, September 30, 2002 - 8:58 am: | |
The 2.7 Motronic was not that late in intro point, my '91 has it.
FWIW, Somehow I don't think moving the battery location had a great deal to do with improved performance. |
billy bob (Fatbillybob)
New member
Username: Fatbillybob
Post Number: 49
Registered: 8-2002
| | Posted on Thursday, September 26, 2002 - 10:23 pm: | |
Actually one big gain in the 348's was in the later ECU's The last ECU's the 94 spider and the ECU number that replaced it put out the most HP and Torque of all the 348's and the rev limit was moved up 200rpm. I did this and notice the difference and have tested teh rev limter on the track. The ECU's are just a plug in part. Easy change. It is much better to get the latest ecu that rechip the car. But at a few thousand dollars you get what you pay for. But for $2400 bucks I think they are well worth it. From what I understand about chip tuning you just can't do it for 400 bucks. On a mass produced BMW you get people interested in making a real chip with all compromises sorted out. When you sell only a few 348 chips ayear you get some guy making empirical desicions without the dyno, without multiple engines, without varying environmental conditions, without a test trrack.... |
Frank Parker (Parkerfe)
Intermediate Member
Username: Parkerfe
Post Number: 1358
Registered: 9-2001
| | Posted on Thursday, September 19, 2002 - 1:26 pm: | |
My TR was problematic. My 348 has been a dream ! |
Hans E. Hansen (4re_gt4)
Junior Member
Username: 4re_gt4
Post Number: 184
Registered: 4-2002
| | Posted on Thursday, September 19, 2002 - 11:18 am: | |
Slightly off topic:
I've heard that 348s were problematic. Were the later ones better sorted out, more reliable? |
Frank Parker (Parkerfe)
Intermediate Member
Username: Parkerfe
Post Number: 1357
Registered: 9-2001
| | Posted on Thursday, September 19, 2002 - 8:47 am: | |
The power increase for the 348 came from a freer flowing exhaust(change from two can to one can muffler) and change from Motronic 2.5 to 2.7. The rear track was also widened through spacers and the final drive was changed to improve acceleration. The battery was moved from the rear to the front to improve handling. There were many cosmetic changes to the interior as well such as higher quality leather and more of it. |
Martin (Miami348ts)
Advanced Member
Username: Miami348ts
Post Number: 2840
Registered: 5-2001
| | Posted on Thursday, September 19, 2002 - 5:41 am: | |
I believe they used the 2.7 Motronic till the end of the 348 run. Maybe even into the 355?
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Dave (Maranelloman)
Member
Username: Maranelloman
Post Number: 396
Registered: 1-2002
| | Posted on Wednesday, September 18, 2002 - 5:06 pm: | |
What about better electronic engine management that allows the engine to make more power at all points on the RPM range? |
Martin (Miami348ts)
Advanced Member
Username: Miami348ts
Post Number: 2830
Registered: 5-2001
| | Posted on Wednesday, September 18, 2002 - 4:17 pm: | |
Just had an idea here. The newer 355 has a free-flow CAT and that has better HP output than the early CATS. Now could it be possibly that the HP increase comes from the switch from early model CATS to newer free-flow CATS?
Does anybody have any insight on this?
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