jon dee

Got a pair of used but serviceable mounts here in Karori that you are welcome to if you want a temporary fix. Cheers...

The AMG version is incredibly cool. Looks like the way of the future. Don't know what real world advantage they might have as far as performance or making your car fun to drive, ? But it would give you something to play with when stuck in traffic Cheers...

We are but sheep being led into the unknown by the Pied Piper of technology.... BAH I say Cheers...

Seller has changed M3 in the main title to M Sport, so a bit of a backdown there Cheers...

Got some pretty sophisticated repartee going on in the Q&A on this listing https://www.trademe.co.nz/a/motors/cars/bmw/listing/3022722919?bof=koIwGRGZ Cheers...

Yeah... I got a bit interested in this kind of stuff when I was working with my supercharger. I was working the boost up by driving the s/c faster and faster with different pulleys, and eventually ran into what I thought was an ignition breakdown problem when I got up to 15psi on 95 octane. This was on a 1600cc engine running 8.9:1 compression..maybe 9:1 as I used a 0.8mm MLS head gasket. Eventually I realised I was running into det around peak torque as the effective compression ratio was just too high for full timing on 95 octane, even with a water/meth system. Looking at the chart you can see why So I had to pull a bit of timing in the rpm range where I was having the problem. Changing to 98 octane might have helped but I was in a pretty steep learning curve at the time and didn't think of that until I tried every other possible solution. I like to think that the BM engineers are a hell of a lot smarter than me, and that they have figured dropping the compression gives the results they were looking for with the S58 engine. Cheers...

Yes, there is no doubt that it is possible make a lot of power with less boost when the engine builder is free to optimise the intake and exhaust for maximum flow and low resistance. Get a high tech turbo, run it in its sweet spot and give it all the fuel it wants. That kind of setup will blow away an OEM setup that has dozens of design goals it has to meet for fuel economy, drivability, emissions, noise and so on, as well as producing acceptable performance over a wide rpm range. Basically, OEM is always going to be a huge compromise for any car sold to the masses. But technology marches on and specific output is increasing at a remarkable rate. Cars like the BM are controlled by computers and the driver has (partial) charge of the computers. Soon the car will take over the driving role and apart from telling it the required destination, there will be no user input. Lawmakers will be happy because they will have absolute control over vehicle speed, accidents will be eliminated and your safety will be assured. Covid... take me now Cheers...

Back on topic Here is a guy who is a bit of a rarity on youtube... he actually knows what he is talking about !!! Here he is comparing the S58 in his new G80 M3 Competition to the N54 in his old e90 335i. One of the more interesting facts he talks about is that the new engine has dropped the compression ratio to allow the engine to run higher boost... as much as 25psi. Trade off is a bit less down low for a bit more up top. Recommended watching for the engine nerds Cheers...

TBH... the guy should have tried to shoot his way out of the dealership and done everyone a favour !!! Cheers...

Not sure... but did that 1000+ word first post just say "New and Improved" ??? 🙄 Cheers...

MHD1+ 335i N54 tune guidelines are indicating around 10whp gain when stepping up from BP98 to an e30 mix. A little more if going to e40 which is the highest recommended on stock fuel pumps. That is on a 330-340whp BP98 base 1+ tune base, so around 3% increase in power. More ethanol will give a higher % increase but when I factor in the cost of upgraded fuel pumps and the possible downside of having ethanol sitting in a car that doesn't see everyday use, I'm not convinced that it is something I want to pursue at the moment. The MHD OTS tunes are bound to be conservative as they are sold to the public at large. I suspect that a custom tune would likely produce a 5% power increase without adding any ethanol. However, I am really happy with the 1+ tune and won't be messing with it unless I add a few more bolt-ons Cheers....

How did you find the e40 mix compared to straight 98 performance wise ? Worth the hassle ? Cheers...

Yeah... the e30 route seems to give a decent lift in power whereas the W/M injection is more about charge cooling and det suppression to allow more timing. I used a Aquamist HSF3 kit on my Corolla when I was running a twinscrew supercharger without any intercooler. MAT would climb past 100degC pretty quick when hauling so I was spraying 50/50 water/meth from around 5psi ramping up with the injector duty cycle. That kept the MAT under control so that I could tune fuel and ignition maps without having to use all sorts of corrections. I did notice that I could take fuel out of the map in the region where the W/M injection was active. So the meth does appear to add some fuel to the combustion process. Never compared it with just injecting straight water, so can't say if that would have had the same effect.on AFR's. Cheers...

Are you running e85 or an e85 mix ? I'm getting 17psi on BP98 and an MHD 1+ tune. If I used the car every day I would be keen to try a e30 mix just to see what difference it makes on a pretty much standard car. But it seems that there can be problems if you let ethanol sit in car when it does not get a lot use (or you don't flush it out with gasoline when you are done playing) so that is on the back burner at the moment. Cheers...

For sure there are a lot of factors that influence how much power a boosted engine will make. If there are restrictions in the inlets or outlets, removing the restriction will allow the engine to make the same power at less boost. Or more power at the same psi if you prefer However, the phrase "turning up the boost" is how tuners extract more power once the hardware is settled and installed. Within reason, more psi will equal more power. Optimising the system requires careful assessment of all the many factors and making the total system from intake to exhaust as efficient as possible, and this is what the BM engineers will spend their time on. Factory turbos will usually roll over short of redline for good reasons... and to get the driver to change gear before rev cut Putting a larger turbo on will allow the engine to stay on boost longer and make more power by virtue of holding the torque curve to redline. That larger turbo will have the potential to to make more psi but if boost is limited by the wastegate then it will push more air at the same psi to hold full boost to higher rpm. Possible downside is that the larger turbo may not be as efficient or spool up as early as the original smaller turbo. That is just how I see things working. Having two small low mounted turbos on the N54 with tortuous inlets and outlets is an OEM packaging solution. For real power you need to make room for a healthy top mount... Cheers...

Hands down the best 404 screen I ever met https://www.carthrottle.com/post/66dy4dx/ Try all combinations of the arrow keys to see how it works. Cheers...

Good numbers Jordan !!! Are you using the factory DME with a flash tune ? Don't see much information around about aftermarket ECU's for BM's. Cheers...

I was looking at the hp figures being quoted for the latest 3 litre turbo engines and got to thinking where does the extra 200hp come from between my 2008 N54 and the latest 2021 competition engine. It's a fair jump from 300hp to 500hp and while improved engine design and fuel delivery etc can account for some, most of the increase must come from more boost. A stronger fully forged engine can obviously take more boost.... but how much was it being fed ? Being curious, I did a bit of digging and saw figures as high as 32psi being bandied around !!!!!!! While by no means extreme for highly modified cars, I did think that was on the high side for a factory production car, so I dis a bit of digging and found the chart shown below. This shows a pull through the first three gears on an X3M Competition with the S58 engine. That shows boost reaching into the low 20's which is entirely believable. If AIT is ambient temperature then it was a hot day which would likely have caused the DME to pull a bit of timing. Under ideal conditions I could see this engine topping out at 24-25psi around peak torque. Does anyone have boost figures for the earlier twin turbo M3's that were running around the 400hp mark ? What about people running upgraded turbos on the N54 ? Rumour has it that the 2021 M3 with the nose job has more up its sleeve, so it will be interesting to see what can be done with a methanol mix and water injection Cheers,,,

I recently sold a house for a family member. some years earlier, for the purposes of reducing the rates bill, I had appealed the rating valuation and had it reduced by nearly 25%. This meant that when I came to sell the house the GV was well below the average for similar properties in the same street. When I engaged a real estate company to market the property they were not concerned by the GV and priced the house to the market at their assessment of what it should sell for. When an acceptable offer was received I had an independent valuation made and the offer was $2K more than the valuation. Pretty much proves to me that a genuine buyer will do their own due diligence and put in a realistic offer. People not prepared to do their homework and just reference the GV will likely end up with a lowball offer and miss out. In the end what you offer when buying anything comes down to how badly you want it Cheers...

I'll rephrase that.... my generic Chinese intercooler bears some resemblance to your CSF intercooler which leads me to believe that they will have some dimensional similarities and install in much the same way Good to know you got it sorted. Cheers...

It just occurred to me that if the land does not have a building on it (improvements) then the rate will be for the land only. When there is a building on the land you will be rated on the capital value (land plus improvements). Such things will get sorted in the next revaluation cycle when your property will be valued according to the sale of similar properties nearby. I'd just look at it as being a thank you from the Council for adding another property to their portfolio of grateful ratepayers Cheers...

Market sets the property selling price... RV is just for the Council to set rates. Enjoy your lower rates while they last Cheers...

The man seems more interested in flogging the crap out of someone else's expensive car and showcasing his drifting skills than he is in making a balanced review of the all round qualities of the car. Just guessing here, but even though this car is capable of competition use, I don't know that many owners will be abusing it in the manner shown. Reminds me of the ego tripping on the old Top Gear show... Cheers...

If none of the people who who were sufficiently interested to go and inspect the car were prepared to put a bid on it, that tells me that it wasn't worth any more than what it sold for. A good example of actions (or lack of them) speaking louder than words Cheers...

Cars got a little weird back in the early sixties