318 ci need to increase initial acceleration - BMW Forum - BimmerWerkz.com
3-Series (E46, E90) Chat relating to the BMW 3-Series from 1999 to Current. Models include: BMW 316i, BMW 318i, BMW 318Ci, BMW 320i, BMW 323i, BMW 325i, BMW 330i, BMW 328 Ci, BMW 328i, BMW 325i/xi, BMW 330Ci, BMW 320d, BMW 330d, BMW 335d.

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#1 (permalink) Old 11-21-2005, 06:07 AM
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318 ci need to increase initial acceleration

I own a 318 ci with the M44 engine unit, and tiptronic gearbox. The cars perfect bar a lack of acceleration from 0-30mph which leaves me struggling to pull out in time from junctions and feeder roads onto motorways. The manual lists a 0-60 time of 12.0sec for the tiptronic which is pretty much the same as the 79hp corolla I had previously, any way to make it 10sec or less, without actually modifying it or is that the only option avail? Any help will be much appreciated.

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#2 (permalink) Old 11-27-2005, 12:14 PM
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FSE Power Boost Valve will help and solve your problem out.

The engine on your car is M43 (1.9L 4Cyl) right?

I have fitted one on my 318ci before and the PBV was working perfectly.

Now the car has been sold, PM me if you hv questions abt the PBV or if you would like to get it from me.
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#3 (permalink) Old 11-29-2005, 04:01 AM
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FSE Power Boost Valve

Thanks for the reply. I have the M44 unit, not the M43. How hard is it to fit this to my engine? I've already got the car superchipped, the engine still struggles though. I was looking to get the power up to 180hp or so. What do you think is my best bet?
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#4 (permalink) Old 11-29-2005, 09:39 AM
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You could buy a 325i, that would get you up to 180hp. :-)

What's the base hp of the M44? Short of super/turbo, most mods seem to generate a max of 20-30hp (CAI + chip + exhaust + pulleys). Is 180 a realistic number with this car?
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#5 (permalink) Old 11-29-2005, 11:28 AM
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All Show No Go

Hootie, the base hp is 118hp, with the chip it's now around 131-133hp. It still takes 11sec to get to 60, the engine races but goes nowhere. I'd be happy with a bit more power, say 155hp max.
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#6 (permalink) Old 11-29-2005, 12:41 PM
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i have the same car,,,and i have no mods....

and i have been electronically timed at 10.2seconds to 62mph..by 2 independant tuners

so ask yourself ,,why is yours so slow
i dont mean to sound off...i dont intend it

but i also have had 1/4 mile speeds tests as well...so i know the time is accurate


ps

mine is the m43 engine...118 bhp...no vanos....disa valve instead

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#7 (permalink) Old 11-29-2005, 02:23 PM
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Quote:
Originally Posted by DaveCotter
Thanks for the reply. I have the M44 unit, not the M43. How hard is it to fit this to my engine? I've already got the car superchipped, the engine still struggles though. I was looking to get the power up to 180hp or so. What do you think is my best bet?
fitting for the FSE PBV, you will need to have the knowledge of fitting fuel pipes in the engine bay, quite easy in fact. it won't increase the hp, but it will help for the initial acceleration by pressuring up the fuel pressure, that means quicker throttle. data said 1.7 times more respondsive.

may i ask which year is your 318ci?
because there were only two engines being used on e46 318ci, M43 (1.9) and N42 (2.0).
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#8 (permalink) Old 11-30-2005, 05:55 AM
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Storme, its has the same engine fitted as your one, and the reason why mine takes so long to get to sixty is because of the auto gearbox, the operators manual lists it at 12.0 sec (0-100km/h or 62mph). Does yours have a tiptronic? Also the car is fitted with a lot of extras. I didn't think this mattered till I had the car weighed (undergoing my countries national car test)with half a tank and no luggage, no passenger, driver or personal items in it and it came in at 1450kg +. They would have spotted any fuel or engine problems so there's nothing wrong there.

Mattadav it has the 1.9litre engine, 118hp. now with the chip it's 130+ but still slow. :
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#9 (permalink) Old 11-30-2005, 12:43 PM
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hi,,,mine is the manual version


what chip do u have??

also i am having my disa valve and crankcase breather diaphram changed at the weekend...i have been told that when it is replaced..there wont be the iniatial slow responce,,,then the boom (like a turbo) this indicated a worn butterfly valve in the disa valve...i will post again and let you know if it is any good

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Last edited by storme; 11-30-2005 at 12:46 PM.
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#10 (permalink) Old 11-30-2005, 06:58 PM
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Quote:
Originally Posted by DaveCotter
Storme, its has the same engine fitted as your one, and the reason why mine takes so long to get to sixty is because of the auto gearbox, the operators manual lists it at 12.0 sec (0-100km/h or 62mph). Does yours have a tiptronic? Also the car is fitted with a lot of extras. I didn't think this mattered till I had the car weighed (undergoing my countries national car test)with half a tank and no luggage, no passenger, driver or personal items in it and it came in at 1450kg +. They would have spotted any fuel or engine problems so there's nothing wrong there.

Mattadav it has the 1.9litre engine, 118hp. now with the chip it's 130+ but still slow. :
it is already really gd for you to get to 130 bps, umm try to get a weight lift for your car, like fiberglass bonnet or removing the spare tire?

between, where did you get your car chipped? and what kind of programme was that?
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#11 (permalink) Old 11-30-2005, 07:04 PM
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Quote:
Originally Posted by storme
hi,,,mine is the manual version


what chip do u have??

also i am having my disa valve and crankcase breather diaphram changed at the weekend...i have been told that when it is replaced..there wont be the iniatial slow responce,,,then the boom (like a turbo) this indicated a worn butterfly valve in the disa valve...i will post again and let you know if it is any good
is there any aftermarket disa valve or crankcase breather out there for 318ci?

if you are just replacing them, i would say repairing them because the old ones were worn, i don't think that will help with the initial slow response that came with the 318ci, i might be wrong but please explain more, im quite interested into this topic
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#12 (permalink) Old 12-01-2005, 06:03 AM
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I purchased the superchip from superchips.co.uk. It was pretty inexpensive(450euro) and it only took half an hour. It gave me 14-15hp extra, with 15% increase in torque also. They have workshops in just about every country in Europe. With the chip installed, fuel economy has improved, I'm getting 65miles city driving out of less than a quarter of a tank. Furthermore, my warranty isn't affected by the chip being installed either. I have nothing but praise for the thing. Check out the website, they seem to be the only company that are backed by every established motor garage.
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#13 (permalink) Old 12-01-2005, 12:37 PM
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sorry

yes it is a repair....

but when i accelerate...i get no go................then i get boom

similiar to a turbo

my technician friend has told me,,this will been a more even acceleration after this has been repaired..

also try this site http://www.chippeduk.com/ if u r in the uk....

there is also a way of increasing the acceleration,,,change the differential

someone like zibby will explain this better than me..i hope they are watching

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#14 (permalink) Old 12-01-2005, 12:52 PM
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Yeah, changing the diff. will give you up to 15% gain in power/torque.
Custom made, limited slip would cost you in America few grand !
Have a look at this side , how it works:
http://auto.howstuffworks.com/differential2.htm
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#15 (permalink) Old 12-01-2005, 01:15 PM
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Quote:
Originally Posted by zibby
Yeah, changing the diff. will give you up to 15% gain in power/torque.
Custom made, limited slip would cost you in America few grand !
Have a look at this side , how it works:
http://auto.howstuffworks.com/differential2.htm
hello, good info guys, but does anyone know that who makes the differential for e46 318ci? used:
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