2003 3.0

Being a N/A engine claims for re-mapping have never been credibly demonstrated beyond smoothing out dips in the curve or shifting the curve slightly, so are hardly worth it. Air intake mods can provide more sound, but no more fury :D

Turbo projects never seem to pan-out and the consensus is that there is little scope for provable gains, short of major engine mods or supercharging which seems to be the most effective solution on the M54 engine. Let the debate begin :P
 
Hi all 👋I’m a new member , just purchased 2006 E85 sport roadster with 113,000 on clock. I wanted a fun drivers car and the handling and feel deliver, I was curious if anyone had tried an aftermarket air filter mod for the 2.0i or indeed any other mods that could improve throttle response (short of remap) thanks in advance....
 
SlackjawZ said:
Hi all 👋I’m a new member , just purchased 2006 E85 sport roadster with 113,000 on clock. I wanted a fun drivers car and the handling and feel deliver, I was curious if anyone had tried an aftermarket air filter mod for the 2.0i or indeed any other mods that could improve throttle response (short of remap) thanks in advance....

Most people would upgrade to a 2.5 or 3.0 to get more power.

Any power gains from an air filter mod would be debatable.
 
240bhp is enough for a small car like the z

My Tiv was 289bhp and the z is probably just as quick with it being a more modern set up
 
CHIMV8 said:
240bhp is enough for a small car like the z

My Tiv was 289bhp and the z is probably just as quick with it being a more modern set up

Te power to weight ratio would be a better number to deal with as it equals things out better across cars.

Z4 M Roadster 227.6 bhp per tonne
Z4 Alpina Roadster S 227.2 bhp per tonne
Z4 M Coupe 226 bhp per tonne
Z4 3.0si Roadster 188.4 Bhp per tonne
Z4 3.0i 167.03 bhp per tonne
Z4 2.5si 141 bhp per tonne
 
If you want relatively cheap, reversible, thrills then a NO2 kit is the way to go.

If you don’t mind a compressed gas cylinder in your boot then 50/75/100 BHP kits are readily available. This in the caveat that you don’t want the extra power available ‘all’ the time! As the gas will run out :driving:
 
True-Blue said:
If you want relatively cheap, reversible, thrills then a NO2 kit is the way to go.

If you don’t mind a compressed gas cylinder in your boot then 50/75/100 BHP kits are readily available. This in the caveat that you don’t want the extra power available ‘all’ the time! As the gas will run out :driving:

Refill gas bottles? I'll just wait for The Mr. Fusion Home Energy Reactor and stick that on the car. :rofl:
 
skelters said:
True-Blue said:
If you want relatively cheap, reversible, thrills then a NO2 kit is the way to go.

If you don’t mind a compressed gas cylinder in your boot then 50/75/100 BHP kits are readily available. This in the caveat that you don’t want the extra power available ‘all’ the time! As the gas will run out :driving:

Refill gas bottles? I'll just wait for The Mr. Fusion Home Energy Reactor and stick that on the car. :rofl:

Refilling the gas bottle isn’t expensive.... and we’re not talking about an industrial size calor Gas bottle :rofl:

But realistically, if you want an relatively cheap, instant power boost on a NA engine, Nitrous is the way to go :thumbsup:
 
https://www.noswizard.com/car-nitrous-kits/wet-car-nitrous-kits/efi-wet-nitrous-kits/efi-wet-street-car-nitrous-kits/sb150is6-nitrous-kit-complete.html

These guys been around for decades :thumbsup:
 
Power gains on a smaller n/a engine requires serious money.

Ive seen people spends thousands on manifolds, exhausts, itbs, air filters for relatively small gains.

Supercharging or turbo charging is not heard of but im not sure what type of compression these engines run at ie strengthing the internals = ££££
 
Major said:
Power gains on a smaller n/a engine requires serious money.

Ive seen people spends thousands on manifolds, exhausts, itbs, air filters for relatively small gains.

Supercharging or turbo charging is not heard of but im not sure what type of compression these engines run at ie strengthing the internals = ££££

Granted, but the thread title has 3.0 in it?
 
True-Blue said:
Major said:
Power gains on a smaller n/a engine requires serious money.



Ive seen people spends thousands on manifolds, exhausts, itbs, air filters for relatively small gains.

Supercharging or turbo charging is not heard of but im not sure what type of compression these engines run at ie strengthing the internals = ££££

Granted, but the thread title has 3.0 in it?

Yup but as a previous Jap na owner i frequented many n/a engined forums of various sizes and one thing i learnt was that unless its turbo charged to begin with irrespective of capacity , getting big gains costs money to do it properly.
 
If you google the M54 or N52 Engine and Nitrous you end up down a rabbit hole you don't want to get into.

Anything from 15 - 125 bhp in the results for both the M54 and N52 engines.

Lots of BMW anoraks and loads of info on what to do and what not to do!
 
Crikey one little comment on Bhp and storm Dennis arrives early😂😂😂😂
Alternatively buy one of the hard top z’s,apparently 380bhp can be gained with that model
 
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