Question for Supersprint Header Guys - The Unofficial BMW M5 Messageboard (m5board.com)

Mvious · 21st May 2005, 04:13

Well my dilema is that my beast is stock aside for the Tubi Exhaust and the Dinan Stage 1 engine software. I want to get the best bang for the buck, so I notice that the headers give the most horsepower gains than any other Mod.

My Question is do I have to do any type of CAI to go along with the headers. I would rather spend $2,800.00 on headers opposed to spending $2,000.00 on Dinan CAI and not get any horsepower gains. But will this hurt my Beast.

My 2nd question is do I have to upgrade my engine software to go along with the headers of can I continue to use my Dinan stage 1. I wanna get the Supersprint Headers and the connecting pipes with in the next couple of weeks.

Regards,

Marion

Keith97M3turbo · 21st May 2005, 04:54

Marion, you will be VERY pleased with headers, it will be one of the best bangs for your money. You WILL need software! The best is Powerchips.
You don't need a CAI, before I found a set of Dinan intakes used I had the home depot mod (brake ducts w/ intake ,like A/A's kit) with a better filter.
Personally the Dinan CAI is way to high new, if you must have it get one used.

clauswagner · 21st May 2005, 06:35

I just did the headers (actually I did the entire header back) without any intake or software modifications and gained 30+ HP to the wheels. That was on a Z8. Software helps but is not necessary.

gsfent · 21st May 2005, 14:05

Quote:

Originally Posted by clauswagner

I just did the headers (actually I did the entire header back) without any intake or software modifications and gained 30+ HP to the wheels. That was on a Z8. Software helps but is not necessary.

Before writing off the need for software, I would want to see the AF's. I would be very afraid of running too lean without changing the software. In addition, on the road the car will lean out slightly since most dynos cannot simulate the air flow at speed. On my PC equipped car, I was warned by Wayne to be very careful driving with the headers before doing the software upgrade, the cost of which was nominal.
Regards,
Jerry

slowcar · 21st May 2005, 16:40

If i was going to do it again I would go gears first, powerchip & temp relocation. I have 3.64 gears and they made more difference than my supersprint headers,cats,h pipe.mufflers did. I just did powerchip 93 octane and temp relocation and it works great. Temp sensor in air cleaner. I hope this helps you. All we all need now is a pair of superchargers.

bmwusa · 21st May 2005, 16:55

I agree with Jerry, I think if you get the headers done you should get some software as well, are you may potentially find your self in a position where you are running lean, but I think you should go for it, the SS headers are a good deal and provide significant gains, Josh

clauswagner · 21st May 2005, 16:58

I had the car on the dyno before and after, the A/F didn't change much. The target A/F isn't set optimal for stock and that will obviousely not change until you tweek the software. The close loop works and will not allow you to destroy your engine. This wasn't meant to be an argument. If you get headers don't worry about not being able to drive the car. Enjoy it and when time and money allows it get her tuned. You will extract her best.

By the way, before SS was allowed to sell the system they produced it for Hamann. Hamann sold the set-up with a software package. Scanning through the software revealed that the software was form Superchip and all it did was raise the rev limit, speed limit and alter throttle response.

Claus

bmwusa · 21st May 2005, 17:03

Quote:

Originally Posted by clauswagner

I had the car on the dyno before and after, the A/F didn't change much. The target A/F isn't set optimal for stock and that will obviousely not change until you tweek the software. The close loop works and will not allow you to destroy your engine. This wasn't meant to be an argument. If you get headers don't worry about not being able to drive the car. Enjoy it and when time and money allows it get her tuned. You will extract her best.

By the way, before SS was allowed to sell the system they produced it for Hamann. Hamann sold the set-up with a software package. Scanning through the software revealed that the software was form Superchip and all it did was raise the rev limit, speed limit and alter throttle response.

Claus

All I was going on was prevoius conversations about this, I personally do not have first hand experiance, so I could be wrong, it just seems plausible to me at least, that headers may change the A/f ratio and with the huge replacement cost of our engines that it is at least worth considering this. Josh

mottati · 21st May 2005, 17:38

Quote:

Originally Posted by clauswagner

The close loop works and will not allow you to destroy your engine.

Claus

Closed loop works, but only on part throttle. Once you go WOT, the car goes into open loop mode, otherwise we wouldn't be seeing afr's in the mid to high 12:1 range. I agree, if you install headers, you could drive around for a while before getting the software, but i'd be a little cautious about a lot of wot driving. I'd imagine the stock software is already set up to go rich at high load, just for safety.
Mike

XrayMD · 21st May 2005, 18:38

Agree with all above. You SHOULD get the software. Without it, you run the risk of burned piston crowns from WOT driving. You'd be OK for a bit as long as you don't do any WOT. Call and talk to Joel or Wayne at Powerchip (www.powerchipgroup.com)

Mvious · 23rd May 2005, 01:49

Just wanna thank all you guys for your help. But still don't know if I could use my Dinan Stage1 software with the Supersprint Headers.

Regards,

Marion

Keith97M3turbo · 23rd May 2005, 06:58

Marion , Xray summed it up, you can DRIVE it, but you WILL run the risk of being to lean at WOT. Powerchips found this tuning with Evosport if I recall.
ex. Wayne from P/chips emailed me with concern that I had the latest header software for it risking being lean. I got headers very early and had software from P/C which was similar for a S2 , Wayne wanted me to have the newer files from which they found it needed more fuel.
www.powerchipgroup.com