Quantum Remap on E89 20i

[Pooltee]

Pooltee, if you can find an understanding MOT station you should go for a de-cat rather than a new exhaust system...you’ll get a distinct sound that doesn’t sound unpleasant plus better spool up time and slightly more BHP..

I am very tempted to try this Pete. Have you got a link for where you got your decat pipe from? I was going to go with the ultimate bhp one, but from what I remember the for wasn’t exactly straight forward.

Cheers

Paul

[Pbondar]

Pooltee, if you can find an understanding MOT station you should go for a de-cat rather than a new exhaust system...you’ll get a distinct sound that doesn’t sound unpleasant plus better spool up time and slightly more BHP..

I am very tempted to try this Pete. Have you got a link for where you got your decat pipe from? I was going to go with the ultimate bhp one, but from what I remember the for wasn’t exactly straight forward.

Cheers

Paul

https://www.vr-speed.com/vrsf-n20-catle ... -e89.html/

[ieatanimals]

Hi. Just had my 1.8 Z4 remapped by A1 Remaps in Hull. I did get a custom stainless exhaust fitted by OLDSCOOLER. So all in all about about £800. The difference is absolutely unreal! Would so recommend the upgrade...

Could you post up a sound clip / video of the custom exhaust please. Helps me with my research

Hi. Sorry for the late reply. Yes, I will get a clip to you when she is warm and ready!

[cwunch]

Dear all, greetings from Istanbul.
I have just bought a z4 20i, and get it remapped. On dyno, it was 158hp (? Probably because 95ron/91-92oct) and 275nm torque. All stock, stage1 tailormade map made it 260hp and 455nm torque (which is also zf8hp gear limit). Car become absolute fun, this is what it should have been in the first place.

Not pushing to the limits now, until I make a Liqui Moly engine flush + 5w40 synthech and ceratec.

One question; do u guys use drop in performance filters? Or go with the original paper ones?

Best regards

[B21]

Dear all, greetings from Istanbul.
I have just bought a z4 20i, and get it remapped. On dyno, it was 158hp (? Probably because 95ron/91-92oct) and 275nm torque. All stock, stage1 tailormade map made it 260hp and 455nm torque (which is also zf8hp gear limit). Car become absolute fun, this is what it should have been in the first place.

Not pushing to the limits now, until I make a Liqui Moly engine flush + 5w40 synthech and ceratec.

One question; do u guys use drop in performance filters? Or go with the original paper ones?

Best regards

Congratulations….personally I would avoid using DCIs and /or gauze type filters..

The E89 airbox design is pretty good and using a quality filter , Mahle, FRAM etc and you won’t limit performance but get good protection..

If the car is over 25000 km fresh new plugs is a good idea too

[cwunch]

Thanks for the suggestions. It is 2014 model, with 80k km on it. Spark plugs and some gaskets have been changed. Car is fully serviced from authorised BMW dealer. I will try to keep OCI to 4-5k km/ 1 year.

I am also sure not to use any kind of open type filter for my setup. Even from the drop-in’s, I am looking for a dry one. Because back in the old days, I remember oiled filters were damaging air sensors… I will probably end up with a fine classic filter, which will be changed in oil intervals.

[B21]

FWIW when I was dyno-ing mine it made 0.2 extra BHP with no air filter element in the air box..in 300bhp..

The BMW official maintenance program isn’t anything to write home about..oil n filter changes every 8km is prudent..

If it’s an auto a fluid n filter change would be good..

[Smartbear]

This is the highest powered n20 I’ve ever seen verified on a dyno, it made this power using an n55 turbo & had forged internals. Eye watering

B3AC577A-065D-458B-AE27-0AFB00215CC5.jpeg (60.08 KiB) Viewed 1020 times

Rob

[B21]

Wow..glad I stopped when I did..that would have been nippy

[sumotan]

Dear all, greetings from Istanbul.
I have just bought a z4 20i, and get it remapped. On dyno, it was 158hp (? Probably because 95ron/91-92oct) and 275nm torque. All stock, stage1 tailormade map made it 260hp and 455nm torque (which is also zf8hp gear limit). Car become absolute fun, this is what it should have been in the first place.

Not pushing to the limits now, until I make a Liqui Moly engine flush + 5w40 synthech and ceratec.

One question; do u guys use drop in performance filters? Or go with the original paper ones?

Best regards

Can ecu remap really produce 455nm of torque at the wheels ?????

[cwunch]

260hp and 455nm torque is corrected engine data. (Whp seems 225hp) If you can make direct comparison, wtq can be about 390nm?

[cwunch]

FWIW when I was dyno-ing mine it made 0.2 extra BHP with no air filter element in the air box..in 300bhp..

The BMW official maintenance program isn’t anything to write home about..oil n filter changes every 8km is prudent..

If it’s an auto a fluid n filter change would be good..

Redarding auto, I would like to share an important info. We have just serviced my brothers 420d, 2014 with 150.000km, at ZF original service center. We did not have any complaints, only a slight vibration from 3rd gear to 4th gear hard pull.

ZF technician was very happy that we have chosen to change the oil&filter. Because the used oil was very dark and water thickness. Which means it was not making its duty… If we had driven with the old oil, his guess was 20.000km max, until a complete transmission rebuild!!! (As you well know, BMW says it is life time, ZF says 100.000km)

[B21]

FWIW when I was dyno-ing mine it made 0.2 extra BHP with no air filter element in the air box..in 300bhp..

The BMW official maintenance program isn’t anything to write home about..oil n filter changes every 8km is prudent..

If it’s an auto a fluid n filter change would be good..

Redarding auto, I would like to share an important info. We have just serviced my brothers 420d, 2014 with 150.000km, at ZF original service center. We did not have any complaints, only a slight vibration from 3rd gear to 4th gear hard pull.

ZF technician was very happy that we have chosen to change the oil&filter. Because the used oil was very dark and water thickness. Which means it was not making its duty… If we had driven with the old oil, his guess was 20.000km max, until a complete transmission rebuild!!! (As you well know, BMW says it is life time, ZF says 100.000km)

QED

[SSF]

This is the highest powered n20 I’ve ever seen verified on a dyno, it made this power using an n55 turbo & had forged internals. Eye watering
B3AC577A-065D-458B-AE27-0AFB00215CC5.jpeg
Rob

Isn't the gearbox rated to max 450 Nm of torque?

[B21]

This is the highest powered n20 I’ve ever seen verified on a dyno, it made this power using an n55 turbo & had forged internals. Eye watering
B3AC577A-065D-458B-AE27-0AFB00215CC5.jpeg
Rob

Isn't the gearbox rated to max 450 Nm of torque?

The auto box is rated at 450nm but torque limiter s/w will back the DME to comply with those limits…suspect that car used a manual box..