BMW Z4 3.0si Coupe

[cerb4.5lee]

Deep Thought said:

TameRacingDriver said:

Engines are really good in these, a mass produced engine, and mine was remapped, I'd swear it was faster than my Boxster S in a straight line. Definitely much more torque at low revs for sure.

I've always shyed away from remapping non turbo'd cars.

I take it there was a noticable difference? I'd consider getting it done if there was.

My 370Z needed remapping after the sports cats were fitted and it definitely makes a difference I think. I don't think that you get much performance gains, but it does make the car feel much more lively though. The 370 doesn't have all that much torque(270), but it picks up really well from low down and I didn't really expect that from a NA engine. The E92 M3 that I had was as flat as a pancake low down in comparison for example(both cars weigh about the same too).

[Court_S]

cerb4.5lee said:

Deep Thought said:

TameRacingDriver said:

Engines are really good in these, a mass produced engine, and mine was remapped, I'd swear it was faster than my Boxster S in a straight line. Definitely much more torque at low revs for sure.

I've always shyed away from remapping non turbo'd cars.

I take it there was a noticable difference? I'd consider getting it done if there was.

My 370Z needed remapping after the sports cats were fitted and it definitely makes a difference I think. I don't think that you get much performance gains, but it does make the car feel much more lively though. The 370 doesn't have all that much torque(270), but it picks up really well from low down and I didn't really expect that from a NA engine. The E92 M3 that I had was as flat as a pancake low down in comparison for example(both cars weigh about the same too).

I think it’s the owner delivery that often gets smoothed out when mapping N/A cars.

My other half’s 125i seems less peaky following a remap, there’s a much nicer mid range even compared to my 130i.

[TameRacingDriver]

cerb4.5lee said:

Deep Thought said:

TameRacingDriver said:

Engines are really good in these, a mass produced engine, and mine was remapped, I'd swear it was faster than my Boxster S in a straight line. Definitely much more torque at low revs for sure.

I've always shyed away from remapping non turbo'd cars.

I take it there was a noticable difference? I'd consider getting it done if there was.

My 370Z needed remapping after the sports cats were fitted and it definitely makes a difference I think. I don't think that you get much performance gains, but it does make the car feel much more lively though. The 370 doesn't have all that much torque(270), but it picks up really well from low down and I didn't really expect that from a NA engine. The E92 M3 that I had was as flat as a pancake low down in comparison for example(both cars weigh about the same too).

Actually, while I previously commented that I couldn't say for sure what the difference was between a standard and remapped n52, I did remap an fn2 civic type R and fk me the difference was amazing, although not much more actual power as you say, but a lower VTEC, better noise and loads more torque. Made the car for me

[Deep Thought]

Court_S said:

I think it’s the owner delivery that often gets smoothed out when mapping N/A cars.

My other half’s 125i seems less peaky following a remap, there’s a much nicer mid range even compared to my 130i.

The 125i would have been a good candidate for a remap. Isnt it basically the 3.0i anyway, just detuned?

[coldel]

Thanks Wayne, I have a £20 unit from china on the way but will look that up also! I am not happy with the wired solution via Aux really.

Michelin Pilot Sport 4's are on and wow...what a difference. I was thinking of just keeping the run flats and see how it goes but so glad I didn't, handling wise its another level entirely and makes driving the car so much more a pleasure.

[Deep Thought]

coldel said:

Thanks Wayne, I have a £20 unit from china on the way but will look that up also! I am not happy with the wired solution via Aux really.

Michelin Pilot Sport 4's are on and wow...what a difference. I was thinking of just keeping the run flats and see how it goes but so glad I didn't, handling wise its another level entirely and makes driving the car so much more a pleasure.

I changed the runflats on my 630i to MPS4s. What a difference!

Really well pleased with them. The ride quality is much improved.

I've them on my M140i also, but that was a change just from MPSS tyres when they were worn.

[cerb4.5lee]

coldel said:

Michelin Pilot Sport 4's are on and wow...what a difference. I was thinking of just keeping the run flats and see how it goes but so glad I didn't, handling wise its another level entirely and makes driving the car so much more a pleasure.

The PS4's are a great tyre I reckon. Plus you will really feel a change from swapping from the run flats too. I remember swapping the run flats to normal tyres on the 640d and the difference was night and day.

I keep wondering what the new replacements for the PS4(the PS5) are going to be like, because I've been really happy with the PS4, so I'm hoping that the PS5 are more of the same. I hardly do any miles though...so it will probably be years before the PS4 need changing!

[coldel]

Just got a second replacement PDC module for the reversing sensors...and nothing. So frustrating. I have checked the sensors they are all ticking indicating they are functional. I have tried two replacement PDC units and neither made any difference. Tried cleaning up the sensors with a bit of WD40 and wiping them really clean. Nothing.

[Court_S]

Deep Thought said:

The 125i would have been a good candidate for a remap. Isnt it basically the 3.0i anyway, just detuned?

Yup, same engine with a restricted throttle basically. The power curve feels different to my car, with a bit more lower down.

[Court_S]

coldel said:

Thanks Wayne, I have a £20 unit from china on the way but will look that up also! I am not happy with the wired solution via Aux really.

Michelin Pilot Sport 4's are on and wow...what a difference. I was thinking of just keeping the run flats and see how it goes but so glad I didn't, handling wise its another level entirely and makes driving the car so much more a pleasure.

It’s night and day.

If we’d driven my other half’s 125i before buying it (Covid purchase), I think I’d have run a mile. It was hideous on the run flats. A change to normal tyres was night and day better.

[curvature]

Z4MCSL said:

I have a montego blue coupe (sport) with the 108 alloys, manual on about 90k

I need to sell it but when I look at a thread like this I end up wanting to keep it

I’m looking for one if that helps

[MOTK]

coldel said:

Just got a second replacement PDC module for the reversing sensors...and nothing. So frustrating. I have checked the sensors they are all ticking indicating they are functional. I have tried two replacement PDC units and neither made any difference. Tried cleaning up the sensors with a bit of WD40 and wiping them really clean. Nothing.

Do you mean you've replaced the pdc controller? Part #3 66209129815 If so then it is quite possible someone has coded the car to turn them off.

[coldel]

MOTK said:

Do you mean you've replaced the pdc controller? Part #3 66209129815 If so then it is quite possible someone has coded the car to turn them off.

Yes i replaced part 3, i tried two different used units from ebay and I get the same outcome. The sensors tick, all four of them, the unit I tried changing and still when I put it into reverse I get a long 5 second tone and then nothing.

The previous owner (private sale) said they did work for him and he hadn't done anything to them, although how much to be believed is obviously open to debate.

Edited by coldel on Thursday 24th February 10:08

[Tommie38]

Those CSL’s really set these car’s off. A drop to get the stance right and black kidney grills look amazing.

[Tommie38]

cerb4.5lee said:

coldel said:

Michelin Pilot Sport 4's are on and wow...what a difference. I was thinking of just keeping the run flats and see how it goes but so glad I didn't, handling wise its another level entirely and makes driving the car so much more a pleasure.

The PS4's are a great tyre I reckon. Plus you will really feel a change from swapping from the run flats too. I remember swapping the run flats to normal tyres on the 640d and the difference was night and day.

I keep wondering what the new replacements for the PS4(the PS5) are going to be like, because I've been really happy with the PS4, so I'm hoping that the PS5 are more of the same. I hardly do any miles though...so it will probably be years before the PS4 need changing!

Think PS5 is already out in some sizes. Keen to see how they perform. Continental and Goodyear are also releasing tyres in the segment. I think that would be PremiumContact 7 and Asymmetric 6 (I could be wrong).

[coldel]

I think the parking sensor conundrum will have to wait for another day...

I did though manage to install a bluetooth dongle on the back of the head unit, brilliant!

[Deep Thought]

Seek said:

Deep Thought said:

Seek said:

Deep Thought said:

As i said above i've a set of Z4Ms that i think i'll stick on this summer for a change but i dont think they'll have the wow factor of the CSLs even though i really do love the Z4M rims.

Are you sure they fit? The wheel offset on the rear of a Z4M is totally different than a 3.0Si.

Yes they do. They sit out a little more but that just fills the arches out nicely.

.... and it turns out you were absolutely right.

Had a spare hour today so got the Z4M wheels out and swapped over a rear. It sat out about an inch past the wheel arches which is just too much for me.

Bugger.

[Mr Tidy]

Deep Thought said:

.... and it turns out you were absolutely right.

Had a spare hour today so got the Z4M wheels out and swapped over a rear. It sat out about an inch past the wheel arches which is just too much for me.

Bugger.

People do run M wheels on non-Ms though, but I've no idea how they get on with possible rubbing issues.

Staggered 18s on the 3.0Si have 8.5J ET50 rears but 224s on the M are 9.0J ET30 rears so that's like more than a 25mm spacer!

[Deep Thought]

Mr Tidy said:

People do run M wheels on non-Ms though, but I've no idea how they get on with possible rubbing issues.

Staggered 18s on the 3.0Si have 8.5J ET50 rears but 224s on the M are 9.0J ET30 rears so that's like more than a 25mm spacer!

Yes the wheel rim itself was sitting out about an inch past being flush with the bodywork, so probably closer to 1.5 to 2 inches out beyond how it would sit on a Z4M.

They'll go up for sale now. They've had all the work done - powdercoated, new genuine centre caps, new genuine M badges, matching set of Michelin tyres.

They looked well on my E90 330i (10mm spacers on front) so potential there for someone, but in reality there would be someone with a Z4M would want them. Its just a matter of finding that customer.

[Mr Tidy]

I'd have bought them a year ago!

But I found a set of 224s locally, got them refurbed and had new tyres fitted.

So timing is probably also a factor.

Good luck anyway.