BMW M5 Forum and M6 Forums banner

1 - 20 of 70 Posts

·
Registered
Joined
·
21 Posts
Discussion Starter #1
Hi everyone, I'm looking to purchase a 2003 m5 before the fall but i want to give it some more power. So I would like to know what you think is the best way to get the m5 to around 450-500 horse power. Ive been doing some research on aftermarket parts and so far a performance chip and a new air intake would be a good place to start but i would like to know your opinions on this.
 

·
Registered
Joined
·
2,182 Posts
Hi everyone, I'm looking to purchase a 2003 m5 before the fall but i want to give it some more power. So I would like to know what you think is the best way to get the m5 to around 450-500 horse power. Ive been doing some research on aftermarket parts and so far a performance chip and a new air intake would be a good place to start but i would like to know your opinions on this.

Have you driven the M5 for extended periods of time, is the 400 hp not enough?

Its a naturally aspirated engine so anything you can think of can be done to the engine.
 
  • Like
Reactions: M55555

·
Registered
Joined
·
21 Posts
Discussion Starter #3
Oh no dont get me wrong I would be perfectly happy with this car bone stock its that good. I have been in several rides before in both the e39 and e60 and the extra power in the e60 was just unbelievable. i prefer the e39 though and would love to just give it a slight power increase.
 

·
Registered
Joined
·
6,642 Posts
Depends what you want to have...

Two questions:

-how much power should the car have?

-how much are you willing to spend?

Thes questions are the easiest way to find the right direction for your request...
 

·
Registered
Joined
·
21 Posts
Discussion Starter #5
Well I'm willing to spend 5000$ on it and in terms of the first question, are you asking me how much of power increase I am looking for or how much should the car be able to handle?
 

·
Registered
Joined
·
2,182 Posts
Well I'm willing to spend 5000$ on it and in terms of the first question, are you asking me how much of power increase I am looking for or how much should the car be able to handle?
If you are looking for reliable HP, $5000 should get you 40-60 real Hp,
 

·
Registered
Joined
·
732 Posts
I would concentrate your efforts on finding a great example of an M5 rather then worrying about what to mod the car with. Remember the more power you make from your engine the less life you will have in it, and the more parts need to be replaced. If you really want 500hp why not save the $5000 in mods and spend that $5000 to buy an E60, then you are done.
 

·
Registered
Joined
·
273 Posts
Headers for between $2-3K are worth 25-30HP. The other option is ESS which is about $9K and gives you 150HP. There's not a lot in between.

We don't have a ~$500 JB3 that we can pop in for 50-70HP, if that's what you were looking for.
 

·
Registered
Joined
·
21 Posts
Discussion Starter #9
That's actually perfect to combine those headers your talking about with a chip and air intake cause that's about 50 hp increase. Do you have link to those headers?
 

·
Registered
Joined
·
4,407 Posts
Ive been doing some research on aftermarket parts and so far a performance chip and a new air intake would be a good place to start but i would like to know your opinions on this.
Any real research will indicate that an intake and chip is a very poor modification for our cars, as the stock intake is an exemplary system.

The biggest gains to be had are headers for the money you are talking. A supercharger is really the only way to go if you want a significant power increase.

Coming from a 528 I highly doubt you will need, at least initially, extra power. I too have driven in an E60 M5 as well as much faster cars yet I do not desire to make my car any faster, as balance is key. Buy the car and then if you want to make the modifications, some research here will give you all the answers you are looking for.
 

·
Registered
Joined
·
832 Posts
Please search the threads. He's some product topics to help you on your way.

Supersprint Headers
Evolve Headers
Dinan Headers
Evolve Alpha N
Powerchip

Adding to previous comments, there's no point throwing money into performance parts if the car itself is in bad condition. You might find that you'll spend a percentage of your projected $5000 on renewing OEM parts (eg. MAFS, CPS, air filters, thermostat, clutch etc)

Good luck.
 

·
Registered
Joined
·
21 Posts
Discussion Starter #12
Yea that really makes a lot of sense too, plus I should probably learn how to drive a 400hp car first. Plus I will probably fall in love with it stock.
 

·
Registered
Joined
·
1,369 Posts
There are only 2 relatively cost effective ways.

1. Supercharger (ESS $8k or $10k or Dinan $30k)
2. Headers + software (Dinan $8k, Supersprint $2500, Evolve $2500, plus $5-700 for software)

The ESS supercharger kit will get you up to either 525 or 550 bhp with no other mods. The Dinan kit will get you closer to 620 bhp but it requires a lot of other modifications (including the $8,000 headers) to get you to that power level.

The Headers will net you about 30-40 reliable bhp and about the same torque. Do some research.

My advice, don't bother modding. Save your money for the insanely expensive repairs. And good luck with the search for the car!
 

·
Registered
Joined
·
1,890 Posts
I got a 4" binder's worth of previous maintenance done to my car including some serious cash repairs like a driveshaft, VANOS solenoids, etc, and I still put $3k into it with in the first month of ownership. I budgeted for it so it wasn't a big deal, but if you're not prepared for it things can add up quickly.
 

·
Registered
Joined
·
4,597 Posts
Any real research will indicate that an intake and chip is a very poor modification for our cars, as the stock intake is an exemplary system.
Please search the threads. He's some product topics to help you on your way.

Supersprint Headers
Evolve Headers
Dinan Headers
Evolve Alpha N
Powerchip

Adding to previous comments, there's no point throwing money into performance parts if the car itself is in bad condition. You might find that you'll spend a percentage of your projected $5000 on renewing OEM parts (eg. MAFS, CPS, air filters, thermostat, clutch etc)
There are only 2 relatively cost effective ways.

1. Supercharger (ESS $8k or $10k or Dinan $30k)
2. Headers + software (Dinan $8k, Supersprint $2500, Evolve $2500, plus $5-700 for software)

My advice, don't bother modding. Save your money for the insanely expensive repairs.
I got a 4" binder's worth of previous maintenance done to my car including some serious cash repairs like a driveshaft, VANOS solenoids, etc, and I still put $3k into it with in the first month of ownership.
Well said, gentlemen. I think you catch the drift, OP. Save your money. Maintenance is inevitable.
 

·
Registered
Joined
·
3,085 Posts
Well said, gentlemen. I think you catch the drift, OP. Save your money. Maintenance is inevitable.

Says the guy with this sig:

2001 Carbon Black ///M5
Supersprint 4-1 Headers
Magnaflow 10416 Resonators
Timmay77 Signature Muffler Delete
Custom Powerchip Software Tune
Bilstein PSS9 Coilovers
BBS Challenge Wheels
Continental SportContact 2 Tires
Wheel Stud-Conversion Kit F/R
15mm Front + 5mm Rear Spacers
E60 545i SSK + UUC DSSR + ZHP Knob
ExoticsTuning Front Lip
Slimmbones' C63 AMG Style Diffuser
Carbon Fiber Wrapped Interior Trim
3M 40% Window Tint
Hardwired Valentine One Radar
3000K HID Fogs
Smoked Taillights


hiha
 

·
Registered
Joined
·
4,597 Posts
Says the guy with this sig:

2001 Carbon Black ///M5
Supersprint 4-1 Headers
Magnaflow 10416 Resonators
Timmay77 Signature Muffler Delete
Custom Powerchip Software Tune
Bilstein PSS9 Coilovers
BBS Challenge Wheels
Continental SportContact 2 Tires
Wheel Stud-Conversion Kit F/R
15mm Front + 5mm Rear Spacers
E60 545i SSK + UUC DSSR + ZHP Knob
ExoticsTuning Front Lip
Slimmbones' C63 AMG Style Diffuser
Carbon Fiber Wrapped Interior Trim
3M 40% Window Tint
Hardwired Valentine One Radar
3000K HID Fogs
Smoked Taillights


hiha
You gotta pay to play bro LOL :cheers:
 
  • Like
Reactions: JCM55555

·
Registered
Joined
·
624 Posts
I think 5k is better spent on a driving school and lots of track time+maintenance to nurture the existing 400 ponies. That way, you learn how to best utilize the 400hp you already have and this can easily beat someone with no driving skill with 500hp.
 

·
Registered
Joined
·
1,541 Posts
Lots of great advice in this thread. Power is addictive, and so I can understand your deisre for more of it, but my personal opinion is that if you have the budget for a 2003 M5 + $5000, I would concentrate on finding a really top notch car to buy in the first place, make sure it is maintained well, and then get some track time & tuition.


For a big car, a completely stock M5 can really hustle. The best place by far to find this out is on a track, and if you happen to have little prior advanced or race tuition, you will be staggered just how much better you can be with some training from a good tutor. Not trying to belittle your driving ability at all; you might be a seasoned racer, but usually the weakest link in a performance car is the chap behind the wheel:wroom:. You could have some major fun with $5k for track time and maintenance.


If you must have the power, headers really are the best starting place, unless you find a bit more cash and fancy going supercharged. Good luck with your search.
 
1 - 20 of 70 Posts
Top