89 325is Vs 325

Post Wed Apr 13, 2005 9:56 am

i dont know if this has been asked before as i am new here but i was wondering if there was any power difference between an 89 325is and just a standard 325. Also if there is any difference how is it achieved as they have the same engine. thanks

Post Wed Apr 13, 2005 9:57 am

IS is the sport i would say.. has a close ratio box and an LSD, sports interior and rust hiding M-tech kit

Post Wed Apr 13, 2005 10:30 am

No difference in power. BMW should have made the 325i Sport a 2.7.

Post Wed Apr 13, 2005 11:08 am

M5pilot wrote:No difference in power. BMW should have made the 325i Sport a 2.7.

dude the 2.5 was quick in those days.... and still is....

u cant expect bmw to kick out a rwd beast with 200hp trailing arm terror in a rwd car.... uve seen mine in the wet...

did u know they banned the e21 323 in sweden cos it was so tsail happy...

Karan

Post Wed Apr 13, 2005 11:52 am

and auto car branded the e28 5 series dangerous in the wet with the old metric wheels they came with!

On paper a sport is about 0.5 a second quicker but thats being anal

Post Wed Apr 13, 2005 11:54 am

that'll be the close ratio box and slipper diff making the difference there then

Post Wed Apr 13, 2005 1:03 pm

yea but the standard gearbox can hit 60 in 2nd, so after a little tuning to the engine surely its the better of the two gearboxes to use for a 0-60 sprint..well that's my theory anyway - I'm using the standard box.

Post Wed Apr 13, 2005 1:06 pm

advantage of sport box is 2nd and 3rd are closer to each other in terms of ratios... so theres no nasty gap....

Post Wed Apr 13, 2005 1:07 pm

what about the big whole between 2nd and 3rd. It drops u out of the power in the standard box, thats why they made the sport one. just change the 3.91LSD diff for a 3.64LSD and then u will have 60 in 2nd with a sport box, but the car will be slower

Post Wed Apr 13, 2005 1:10 pm

Simon13 wrote:what about the big whole between 2nd and 3rd. It drops u out of the power in the standard box, thats why they made the sport one. just change the 3.91LSD diff for a 3.64LSD and then u will have 60 in 2nd with a sport box, but the car will be slower

Hopefully you're talking in terms of standard engines, I'm sure I'll have enough low down grunt to keep this set-back to a minimum

As for LSD I still have my 4.10lsd, no available funds (and none have actually been about long enough for me to see the post lol) to swap to either 3.91 or 3.64.

Post Wed Apr 13, 2005 1:16 pm

that will be bloody fast with a 4.10! is it a large case? i think the tortque wouls melt a small case diff. another good one is a 3.73LSD but find one

Post Wed Apr 13, 2005 1:18 pm

Yea it's a large case, the only other 4.10lsd I've seen was large case too - not sure if there was a small case one. A 3.73 would be ideal I reckon!

Post Wed Apr 13, 2005 1:22 pm

Mine will do 60 in second anyway...probably thanks to the chip as the rev limiter is set to 7000

Jimbob all that extra grunt will sort out the nasty gap I would imagine matey.

Post Wed Apr 13, 2005 1:37 pm

Yea a rev limit of 7000 would be nice

but I'm under the impression that it would be best to keep mine near 6500 because of the compression, one of the only things I haven't spoken to Ant about

Post Wed Apr 13, 2005 1:54 pm

89 325is and just a standard 325

Are you in the states by any chance? because 325 models vary very much across the pond.

Don't think the US ever got a "sport" as such, can't remeber exactly what the is is, but i can find out. The standard 325 you talk about, is that an e? this stand for eta which is a low revving engine, designed to save fuel, not to drive fast. Think there is a big difference between a 325is and 325e.

Post Wed Apr 13, 2005 4:38 pm

Jimbob wrote:Yea a rev limit of 7000 would be nice but I'm under the impression that it would be best to keep mine near 6500 because of the compression, one of the only things I haven't spoken to Ant about

u dont need to go over 6.5k... although as mine has no limiter..,,

ive seen the naughty side of 7k without anything exploding....

Post Wed Apr 13, 2005 5:30 pm

compression ratios has nothing to do with rev limits

Post Wed Apr 13, 2005 5:38 pm

Jhonno wrote:compression ratios has nothing to do with rev limits

Well I'm only going by what I've been told bud

Post Wed Apr 13, 2005 5:42 pm

lol wasnt having a go dude... just stating

Post Wed Apr 13, 2005 5:45 pm

Nah wasnt havin a go mate, i'm usually a bit of a pansy when it comes to nearing the redline anyway

which is why it concerns me so much

Post Wed Apr 13, 2005 5:59 pm

If you get it mapped properly you wont have any issues with pinking. Dont think you can just stick in a 2.7 chip and it will be anywhere near perfect.

Emerald is the only way forward!

Post Wed Apr 13, 2005 7:08 pm

M5pilot wrote:If you get it mapped properly you wont have any issues with pinking. Dont think you can just stick in a 2.7 chip and it will be anywhere near perfect.

Emerald is the only way forward!

make up your mind Sal... one day its MBE, then one day its maf+unichip... now its emerald...
LOL

hahahah

u'll be fine for the time being with an ant chip for running in... then standalone or maf/unichip is better for throttle response..

i dont see why u cant just keep the afm... and just get a custom chip..

Karan

Post Wed Apr 13, 2005 7:41 pm

ONly suggested emerald because out of the lot its quitye good value for money and the guy doing the mapping is meant to be excellent.

Ant chip may work but it may pink badly. Quaser's 2.7 pinked alot with the 2.7 chip.

Post Thu Apr 14, 2005 4:45 am

Plus Dave Walker is a legend