remapping
- Thread starter macsbm
- Start date
markprz1986
Member
Does any one have their actual rolling road results before and after their car being chipped/ecu remapped?
Would be interesting to see!
Would be interesting to see!
before and after results don't mean much its more how the car now drives after on new map. Gains aint huge on N/A engines for bhp its the extra torque that transforms the car as its so low to begin with. If you search about or ak Jason hes got dyno printo outs from 330ci ive highest I seen was 254bhp but all depends were your car is at to begin with. Mine ran 218 on dyno so will prob be back around 235bhp after agggresive remap which id be happy with. If your after big gains you need to supercharge.
http://www.bimmerforums.co.uk/forum/f120/remap-bmw-330ci-t155873/
http://www.bimmerforums.co.uk/forum/f120/e46-bmw-330i-auto-remap-amazing-gains-power-economy-t138345/
im gutted as I had that bmw performance mag that featured kavs car aswell and gave it to the buyer of my 330ci I should of kept it Kavs atlantis blue was insane for its day no expense spared. Ben Lartey has it now seen it other week o the net if you search it on facebook.
http://www.bimmerforums.co.uk/forum/f120/330ci-clubsport-auto-aggressive-remap-t113657/
http://www.bimmerforums.co.uk/forum/f120/remap-bmw-330ci-t155873/
http://www.bimmerforums.co.uk/forum/f120/e46-bmw-330i-auto-remap-amazing-gains-power-economy-t138345/
im gutted as I had that bmw performance mag that featured kavs car aswell and gave it to the buyer of my 330ci I should of kept it Kavs atlantis blue was insane for its day no expense spared. Ben Lartey has it now seen it other week o the net if you search it on facebook.
http://www.bimmerforums.co.uk/forum/f120/330ci-clubsport-auto-aggressive-remap-t113657/
markprz1986
Member
If its a case of smoothing out the power delivery, then you will see this on a torque curve, this will still be shown on a rolling road test.
pokeybritches
Member
I've had 5 different tunes on my non-M, and 3 tunes on each of my Z4M's. The only time there were 20+ whp gains were when the tune accompanied a large hardware change, especially on the M's with alpha-n tuning. I improved 21.1 whp on a supercharged Z4M after swapping in catless stepped headers in place of the stock North American catted headers, and a stepped s-pipe with high flow metallic cats in place of the large OEM 400 cell cats. So, these were huge exhaust system changes, including different O2 sensor locations and going from 4 x 400 cell large cats to 2 x 100 cell tiny cats, on a car with alpha-n tuning (much less adaptive, where the car is essentially flying blind). And going from a canned supercharged tune (buffered for any car in any condition) to a custom dyno tune only netted a 5% gain in power. No way I believe a tuner can honestly pull 20 whp out of an otherwise stock non-M that still utilizes a MAF sensor.
Every time I made a new hardware change, power was left on the table until the tuning was optimized to reflect what was on the car. Tuning itself didn't create any power. And tuning is less important on cars utilizing a MAF sensor (pretty much every non-supercharged or non-carbon airbox car out there).
One of my non-M tunes was the Conforti Shark Injector, which was great due to the intuitive throttle remap and 7k rpm redline, but 5 whp is barely noticeable.
It sucks, but the way it typically works is a tuner will send a canned file they purchased off software developers, manipulate the dyno graphs to flatter the ego of the customer, and the customer can then feel good thinking his car has an extra ___ horsepower over the average car.
Every time I made a new hardware change, power was left on the table until the tuning was optimized to reflect what was on the car. Tuning itself didn't create any power. And tuning is less important on cars utilizing a MAF sensor (pretty much every non-supercharged or non-carbon airbox car out there).
One of my non-M tunes was the Conforti Shark Injector, which was great due to the intuitive throttle remap and 7k rpm redline, but 5 whp is barely noticeable.
It sucks, but the way it typically works is a tuner will send a canned file they purchased off software developers, manipulate the dyno graphs to flatter the ego of the customer, and the customer can then feel good thinking his car has an extra ___ horsepower over the average car.
Those graphs are from M54 engines which I know are hard to tune as their pretty much already maxed out. Jason spent months developing the map to sell to the public and bought a 330ci specifically to work on. He was an ex bmw technician before he started his company and has been getting the quickest tuned N/A and forced induction bmw's at Santapod annual bmw show each year. If anyone else in the industry told me 20hp is possible id say rubbish too but I know of the guys work and had ECU remaps from other tuners who claimed gains but as you say only didn't deliver with only a possible of 5hp gain. BW chiptune is a very well known UK tuner along with the likes of Evolve just more people will go to Evolve as its a bigger setup so gets the rep as NO.1 UK tuner. From being around bmw's last 10yrs I would only trust Jason at BW chiptune his reputation speaks for itself in UK.
Which makes me want one even more. Well, not the clutch type.
pokeybritches
Member
There are many types of limited slip diffs. For a street car, a helical LSD is usually preferable due to the OEM NVH levels (no added noise), little to no extra maintenance, and no additional understeer under deceleration. It pretty much feels like stock, except with significantly more traction.
I have a diff sat under the stairs in preparation for this project!
pokeybritches
Member
$2000 USD and I'll send you one with a 3.64 final drive.Marlon said:
