fast951

Shaheed,

Your power increase might be due to the different tuning on the chip and not b/c of the MAF...

We might be able to do something with your fuel curve, email me off-line.

Danno

Shaheed, you got +20hp from the MAF upgrade at the same boost, which is pretty good. With come clean-up of the AF-ratios, you can expect another 10-15hp more... <img border="0" alt="[bigbye]" title="" src="graemlins/xyxwave.gif" /> One of the benefits of the Vitesse MAF is you get much finer control of the tuning than other varieties with 4-**** adjusters.

sybelix

I'm waitin for my MAP stage II - kit , so I can be part of this conversation.. <img border="0" title="" alt="[Wink]" src="wink.gif" />
Hopefully it will be here soon..

BTW SimonK, they did not make 951 anymore in '92. I was just wondering your sign.
1991 was the very last year.

<img src="http://boards.rennlist.com/upload/951productionsheet.jpg" alt=" - " />

I have one of those 144 imported MY 90 to US.

User 41221

Can I point out that we are truly blessed to have John at Vitesse and Danno at Guru on this board? Seriously, you guys present some of the best and unbiased information I have ever seen anywhere.

Bravo to both you guys!

Regards,

shaheed

</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by sh944:
<strong>Can I point out that we are truly blessed to have John at Viteese and Danno at Guru on this board? Seriously, you guys present some of the best and unbiased information I have ever seen anywhere.

Bravo to both you guys!

Regards,</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">i second that!! both guys are class acts and examples of how vendors should behave.

fast951

Thank you guys, that's very kind.

I must add, Danno is a very nice guy, and he knows his stuff.
I believe it shows when it's a passion, and not just a way to make money!

m42racer

May I add, that Travis at Guru has been very helpful to many of us here too. He kinda stays in the background, but will always help you.

SimonK

Sybelix,

Mine must be the last last one than he,he kind od special a? It's registered in the UK January 1992. (It could maybe be made in December 1991 and registered 1992)??

But my book states reg date = Jan 1992.

SimonK

Guys come on no-one had told me if 15psi is 15 psi or do chips from chip to chip really make a difference in the actual perception of power increase and real world figures which I have posted.

Danno it seems looking at your web page;

''However the increase in mid-range torque makes a larger contribution to speed than peak-HP. Our 180k-mile test car turned in the following performance numbers after the upgrade:

0-60mph: 5.1-5.3 sec
1/4-mile: 13.6- 13.9 sec @ 106-109mph
80-120mph: 4 sec faster than stock (that's 600ft ahead in side-by-side roll-on comparison)
top-speed: 165mph ''

When I look at the figures I am already there??

Was your test car 951 or 951S?

If S what would happen there?

By the way I also think you and Fast951 are both grand!

fast951

SimonK,

I will use 15psi boost pressure, just to pick a number. You can use 20psi or whatever...

15psi is your boost pressure, which is an indication of the air flowing through your engine. In order to make your engine run you need FUEL and IGNITION.
Fuel and Ignition are controlled by the chip. So the tuning (good or bad) determines your engine's power output.

Also, the sooner you make 15psi boost, and the longer you can maintain the boost pressure, and when tuned correctly, the area under your power curve will increase. You'll be making HP sooner and longer.

If the chips you have are tuned correctly (fuel/ignition). Then you may not see any gain by doing to a different chip.

Most of us think of HP and its relation to speed. Another very important factor is gearing!
The cheapest HP is made by changing the gearing. Either the actual gears or the tire diameter.

SimonK

Thanks fast951 - clear so far.

My question realy is; from stock to where I am now = big diference.

MAF and shims and new chips - am I looking same performance gain again for real (noticable) or just a bit more?

I think new turbo maf and chips - all together looks like it?

I need to dyno don't I...

All I realy want to do is to dust my friends M3 evo. He only gets me above 130+ until his limiter kicks in @155 then I overtake him due to my higher speed... he,he.

fast951

</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by SimonK:
<strong>All I realy want to do is to dust my friends M3 evo. He only gets me above 130+ until his limiter kicks in @155 then I overtake him due to my higher speed... he,he.</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">Why didn't you say that to start with .. I love dusting the Supercharged E36 M3s (on the track only). Nothing more fun that to get next to them and act like you are struggling to get pass. Then floor it and briefly watch the look underneath the helmet as you walk away... I like M3s, nice cars. I just love 951

With the stock turbo you will run out of air at the top end.. A stock turbo at 15psi will no longer keep up with the engine demands around 4600-4900RPM. The K26 is rated at around 390cfm, at 1 bar bost this is what the engine approximate flow requirements at 4600-4900rpm.

951 Stage I or II will make the M3 hit the rev-limiter much sooner than 155mph.. At least that's what the driver will think...

SimonK

My man - fast951. But do I need the new cone air filter in your kit? Can I not keep stock stuff - stealth? Doesn't cone filter suck in hot air = nicht gut?

So Stage 1 will blow M3 evo away? Any increase in top speed and how much?

And turbo S will make what with the kit at the engine 310bhp?

Thanks.

fast951

You will need a cone filter, it sits behind the headlight bucket, not behind the radiator.

You will have a 3" from filter to turbo. If you want to go with stealth mode, you'll have to make some fabrication.

No test on the top speed. Drag and stability becomes a big factor in determining top speed not just HP.

With Stage 1 you should be in the mid-300 HP/TQ at the wheel. That's over 400bhp.

So what's the weight, HP/TQ, gearing of the M3 Evo.

Danno

I've got a configuration that re-uses the stock airbox with a K&N panel filter. Wouldn't be too tough to make it work with one of John's MAF kits. I'm still awaiting some dyno-testing to see how it compares with an exposed conical filter. I suspect that the long snorkel to the fender may still impose some flow-velocity limitations.