[malter2.0]

Apparently this is REALLY difficult to find in search. Would anybody be kind enough to post a link?

I’d like to see a dyno of ’07 335i with Cobb ONLY (NOT interested in dynos with DPs and other mods). JUST SOFTWARE ON 91 octane ONLY.
I don’t need that famous Cobb’s dyno from their brochure which shows stock 335i making 240whp on 91octane, as that doesn’t seem representative.

[FastBimmerN54]

Dyno numbers are just that, numbers. The Cobb dyno is realistic if you look at the delta. Its about ~70 WHP gain from stock. Whether the baseline is 100-170WHP or 300-370whp 70WHP is 70 WHP more.

[ModBargains III]

It's not a 2007 but you'll see similar gains:



I've seen it anywhere around that HP level give or take about 20rwhp or so

[jdbretz]

IIRC Cobb uses a Mustang Dyno which always reads lower than a DynoJet. On a DynoJet, stock cars have around 270-280 whp. So add the 70 hp delta that Cobb gives you and you are at 340-350 on a DynoJet. There are more things to a dyno than just numbers. The delta is the only things that matters not the final number it spits out as all dynos read slightly different. There are many other factor that come into play such as, correction factor (if any), whether its displayed in SAE, Uncorrected, or STD, and type of dyno.

[ModBargains III]

Originally Posted by jdbretz

IIRC Cobb uses a Mustang Dyno which always reads lower than a DynoJet. On a DynoJet, stock cars have around 270-280 whp. So add the 70 hp delta that Cobb gives you and you are at 340-350 on a DynoJet. There are more things to a dyno than just numbers. The delta is the only things that matters not the final number it spits out as all dynos read slightly different. There are many other factor that come into play such as, correction factor (if any), whether its displayed in SAE, Uncorrected, or STD, and type of dyno.

That is correct. I should have mentioned that in my last post hahah.

[malter2.0]

Originally Posted by FastBimmerN54

Dyno numbers are just that, numbers. The Cobb dyno is realistic if you look at the delta. Its about ~70 WHP gain from stock. Whether the baseline is 100-170WHP or 300-370whp 70WHP is 70 WHP more.

Cobb also expresses numbers in terms of % on their dyno graphs. 51% increase on 240whp and 275whp is very different. This is why I asked about user dynos. I have already seen 240whp dyno.

I'm curious as I'm not sure that 91 octane TYPICALLY yields 240whp in stock form? Is that auto tranny or manual?

[jdbretz]

Originally Posted by malter2.0

Cobb also expresses numbers in terms of % on their dyno graphs. 51% increase on 240whp and 275whp is very different. This is why I asked about user dynos. I have already seen 240whp dyno.

I'm curious as I'm not sure that 91 octane TYPICALLY yields 240whp in stock form? Is that auto tranny or manual?

Read my post above, because I don't think you are understanding the differences in dynos. It doesn't matter what completely stock n54 (135, 335, 535, etc) you put on a Mustang Dyno. Most of them will read ~240 whp. Take those exact cars and put them on a DynoJet, and they will read ~270 whp. That's why the delta (difference between stock and tuned) matters, not the ultimate HP number itself. The difference in whp between the auto and manual fairly minimal.

[malter2.0]

I don't think you understand what I mean. For simplicity here it is using 100whp car:

20% increase on 100whp stock car is 120whp
20% increase on 110whp stock car is 122whp

20whp delta on 100whp stock car is 120whp
20whp delta on 110whp stock car is 122whp.

Numbers differ depending what value you start from (stock form).

I've dynoed cars before and understand all of them will read differently, even the same dyno on the same day will read slightly different. I just want to see what is the typical STOCK 91 octane 335i and software only 91 octane. I suspect typical stock 91 octane 335i manual is not 240whp, but more like 260whp. This is why I said I am not interested in already posted dyno from cobb site that lists 240whp value. Trying to see what other actual dyno values have customers got in this form.

I hope that's clear

[jdbretz]

Originally Posted by malter2.0

I don't think you understand what I mean. For simplicity here it is using 100whp car:

20% increase on 100whp stock car is 120whp
20% increase on 110whp stock car is 122whp

20whp delta on 100whp stock car is 120whp
20whp delta on 110whp stock car is 122whp.

Numbers differ depending what value you start from (stock form).

I've dynoed cars before and understand all of them will read differently, even the same dyno on the same day will read slightly different. I just want to see what is the typical STOCK 91 octane 335i and software only 91 octane. I suspect typical stock 91 octane 335i manual is not 240whp, but more like 260whp. This is why I said I am not interested in already posted dyno from cobb site that lists 240whp value. Trying to see what other actual dyno values have customers got in this form.

I hope that's clear

Based off the bold statement I still think you are confused. On a MUSTANG Brand Dyno it will be about 240 whp and on a DYNOJET Brand Dyno it will be about 270 whp on the exact same car. You can ignore the % gain as that was calculated off their Mustang Dyno they ran, so results may vary obviously (some will be higher others will be slightly lower). Its more of a marketing thing. Cobb Stage 2 gives you 51% increase (according to their in house dyno when they tested it, so that % will be slightly higher if tested on a DynoJet Dyno), but you should NOT be running Stage 2 on a stock car so that point is moot. I have already told you the answer to your question. You cannot say ALL 335i manuals dyno "X" because its depends on the brand of dyno, the 2 major ones being Mustang and DynoJet which I have given you their readings. Stage 2 will give you an increase of about 140 hp if you have the supporting mods to run it. Stage 1 will give you about 70 hp leaving the car in stock form.

There are several Dyno charts posted in the Sticky labeled "N54 Dyno Chart Compilation" and here are a few Dynos from Cobb users showing everything I already stated before:

http://www.e90post.com/forums/showth...b#post10512055

EDIT: I guess the end state I am trying to point out is that if you took your car to a Mustang Dyno that said you make 240 hp, and then immediately put it on a DynoJet one and it made 270 hp, do you really think your car made more power? No it made almost exactly the same power its just a difference of how each particular dyno is calibrated. Some read high (DynoJet) and some read lower (Mustang), but at the end of the day the car made exactly the same power. I do understand what you when you were saying there will be a difference if you are going off a %, but a % gain is not absolute when it comes to dyno's. A delta (i.e. gained 70 hp from stock) is typically consistant between the dyno's.

[malter2.0]

You cannot say ALL 335i manuals dyno "X" because its depends on the brand of dyno, the 2 major ones being Mustang and DynoJet which I have given you their readings.

I never said that. I already told you that I agree dynos and cars will all read differently, but if you take an average reading of more samples, you should have a good idea of where a TYPICAL number is.

If 3 cars average 233whp, 252whp and 241whp then that IS different when 3 cars dyno 278whp, 268whp, 259whp.

This is why I would like to see what a typical '07 335i with manual tranny sees. Is average number 240whp or 260whp. Torque converter losses will matter, maybe not significantly, but it all adds up.

Thanks for the link I already looked it before. There is no data for specific information that I am looking for.

[805beemer]

I think what he's asking is was the cobb stock car dyno'd with 91 or 93 octane, and was it an AT or MT as they will differ in the amount of power lost through the drivetrain.

[jdbretz]

Originally Posted by malter2.0

I never said that. I already told you that I agree dynos and cars will all read differently, but if you take an average reading of more samples, you should have a good idea of where a TYPICAL number is.

If 3 cars average 233whp, 252whp and 241whp then that IS different when 3 cars dyno 278whp, 268whp, 259whp.

This is why I would like to see what a typical '07 335i with manual tranny sees. Is average number 240whp or 260whp. Torque converter losses will matter, maybe not significantly, but it all adds up.

Thanks for the link I already looked it before. There is no data for specific information that I am looking for.

The difference between auto and manual is probably between 5-7 hp (1-3% difference between the 2), and I don't consider that enough to add up to much of anything unless you are going for a dyno record. As I have told you .....average on a mustang dyno will be about 240 whp and average on a dynojet dyno will be 270 whp. I edited my post above to further explain what I am trying to tell you. Most people use DynoJet numbers because they are higher, so for all intensive purposes you can say the average is 270 whp for a stock 335i manual, but as stated before its generalizing and not completely accurate.

At stock levels there isn't really much if any difference between using 91 and 93 in terms of the dyno. That comes into play at higher boost level.

[Brey335i]

Originally Posted by malter2.0

IÂ’d like to see a dyno of Â’07 335i with Cobb ONLY (NOT interested in dynos with DPs and other mods). JUST SOFTWARE ON 91 octane ONLY.
I donÂ’t need that famous CobbÂ’s dyno from their brochure which shows stock 335i making 240whp on 91octane, as that doesnÂ’t seem representative.

It is representative. The answers have been clearly laid out in this thread already. A stock 335i using premium octane (91 or 93) will see about 240 whp on a Mustang dyno and 270 whp on a Dynojet.

It's hard to find what you are searching for because you seem to want a 2007 335i running only Cobb Stage 1, using 91 octane, and on a Dynojet. It's a very specific combination. And in the end all that matters is the delta.

[malter2.0]

Originally Posted by jdbretz

Based off the bold statement I still think you are confused. On a MUSTANG Brand Dyno it will be about 240 whp and on a DYNOJET Brand Dyno it will be about 270 whp on the exact same car. You can ignore the % gain as that was calculated off their Mustang Dyno they ran, so results may vary obviously (some will be higher others will be slightly lower). Its more of a marketing thing. Cobb Stage 2 gives you 51% increase (according to their in house dyno when they tested it, so that % will be slightly higher if tested on a DynoJet Dyno), but you should NOT be running Stage 2 on a stock car so that point is moot. I have already told you the answer to your question. You cannot say ALL 335i manuals dyno "X" because its depends on the brand of dyno, the 2 major ones being Mustang and DynoJet which I have given you their readings. Stage 2 will give you an increase of about 140 hp if you have the supporting mods to run it. Stage 1 will give you about 70 hp leaving the car in stock form.

There are several Dyno charts posted in the Sticky labeled "N54 Dyno Chart Compilation" and here are a few Dynos from Cobb users showing everything I already stated before:

http://www.e90post.com/forums/showth...b#post10512055

EDIT: I guess the end state I am trying to point out is that if you took your car to a Mustang Dyno that said you make 240 hp, and then immediately put it on a DynoJet one and it made 270 hp, do you really think your car made more power? No it made almost exactly the same power its just a difference of how each particular dyno is calibrated. Some read high (DynoJet) and some read lower (Mustang), but at the end of the day the car made exactly the same power. I do understand what you when you were saying there will be a difference if you are going off a %, but a % gain is not absolute when it comes to dyno's. A delta (i.e. gained 70 hp from stock) is typically consistant between the dyno's.

Car power is a constant. Dynos are variable. That's obvious. Never disputed it.

Percentage wise, if you say delta whp is what matters figures give different story.

mustang: 240whp+70whp delta=310whp increase of 29.2%
dyno: 270+70whp delta=340whp increase 25.9%

This is why saying 70whp delta or x% is meaningless, because it matters which dyno you use. YES, inherently, the car produces the same power in both scenarios, but if it gives different numbers, that % or 70whp number is deceiving.


^How about I reduce criteria? How about one dyno that is not coming from MFG that shows stock 335i vs 91octane COBB ...mustang or dynojet.

[Brey335i]

Most of the guys willing to spend money on a dyno session have already moved on to other mods. It's gonna be hard to find a stock 335i.

[ajsalida]

Originally Posted by malter2.0

Car power is a constant. Dynos are variable. That's obvious. Never disputed it.

Percentage wise, if you say delta whp is what matters figures give different story.

mustang: 240whp+70whp delta=310whp increase of 29.2%
dyno: 270+70whp delta=340whp increase 25.9%

This is why saying 70whp delta or x% is meaningless, because it matters which dyno you use. YES, inherently, the car produces the same power in both scenarios, but if it gives different numbers, that % or 70whp number is deceiving.

x% increase is not meaningless, it is the only accurate measurement you can make. So if same car stock makes (corrected) 240 HP on one dyno and 270 next, I'd expect same % increase on each dyno for the same tune. What you cannot do (as you said) is compare delta WHP across one dyno to another, and then compute %. However if you correct each for loss factor back to crank HP, you could make a case for comparing HP deltas there.

[Jeff@TopGearSolutions]

You guys are thinking way too hard on this.

A typical stage 1 car will gain approximately 70WHP (give or take 10). Period. Weak Octane, High elevation, high humidity, or heat will change those numbers for the worse. Better octane, lower temps, low humidity, sea level will change those numbers for the better. (There are even more external factors not even being mentioned but I'm trying to keep things simple).

[Jeff@TopGearSolutions]

IF you want to sift through here maybe you can find a dyno that helps.

From what I see dynos are ranging from 60-80 WHP.

http://www.e90post.com/forums/showth...ight=cobb+dyno

[malter2.0]

Thanks Jeff

[ModBargains.com]

Hope this helps out!

Stock vs Cobb Stage 1 3.01


Stock(red)vs. JB4 (blue) vs. Cobb (green)


3 Cobb runs about 3 minutes between each run.

[Bash]

Originally Posted by **********s.com

Hope this helps out!

Stock vs Cobb Stage 1 3.01


Stock(red)vs. JB4 (blue) vs. Cobb (green)


3 Cobb runs about 3 minutes between each run.

What is going on on the JB run? Was that map 1?

What mode was the cobb on? SPORT? Any other mods apart from tune?

[malter2.0]

^^Thanks. Based on stock numbers I'm assuming this is 93 octane?