[07335]

That is my question. I have these, and wanted to see of you all think it would result in 400bhp. Thanks in advance!

[Josephkao]

I think may be 350bhp

[07335]

w/93 octane, I thought the SSTT put out 50hp. My thoughts we're this:

w/93 octane
SSTT - 50 hp
AFE dual cone intake - @20+hp
RPI scoops - @5hp

[OO---OO]

In before some smartass tells you to dyno, lol.
Hows Ramstein, man? I was there every Sunday eating at Chilis back in the day!
Is the New BX built yet?

[07335]

Looking at a completion date next year sometime. Just thinking that going by the advertised numbers of the products...it would be close to 400 to the crank.

[dmboone25]

Originally Posted by 07335

Looking at a completion date next year sometime. Just thinking that going by the advertised numbers of the products...it would be close to 400.

Crank--possibly.

At the wheels--no way. As mentioned before, you should be in the ~350-360 whp range.

[djrobroe]

id say more along the lines of 325 to 335 whp range...

[Former_Boosted_IS]

Has SSTT shown any gains from an intake? Remember it only biases the TMAP sensor, so it cannot adjust the A/F ratio. The only thing an intake would do then is run the A/F ratio lean and probably end up losing power because the ecu will pull timing up top.

[wadgras44]

um . . .

http://www.e90post.com/forums/showthread.php?t=163341

[5soko]

you will make 400BHP if not more, you probably in the 320-335 range on 93 octane to the wheels and up to 340-355WTQ.

[Former_Boosted_IS]

Originally Posted by wadgras44

um . . .

http://www.e90post.com/forums/showthread.php?t=163341

That answers my question. The ecu can bias the STFT's enough to compensate for the increased air flow.

[munters]

Originally Posted by 5soko335i

you will make 400BHP if not more, you probably in the 320-335 range on 93 octane to the wheels and up to 340-355WTQ.

335WHP and ~15% loss = 385-390Bhp max.

[jcarlucci1]

Dual cone intake and SSTT are going to be in the 320-330whp range..maybe even lower according to some of the sstt dynos around here.

325whp= 380 crank

[jcarlucci1]

Originally Posted by wadgras44

um . . .

http://www.e90post.com/forums/showthread.php?t=163341

Most of those gains are from the aftermarket exhaust that replaced the very restrictive stock exhaust.

[rubber_ducky]

Quite honestly, this is a silly excercise. Horsepower gains are almost never the sum of the individual parts. Anyway, what's the point... bragging rights?

[Driver72]

The one fault I would say with Jeff's dyno test and assumption is getting up to twice the power from the AFE intake with OEM sized wheels a 13 degree cooler weather.
The "extreme" heat Jeff referred to was 90 degrees. His prior dyno tests were at 77 degrees.
That might make a difference of 2-3 rwhp.
And his oversized wheels MIGHT be another 2 whp.

So I think his assumption of an increase of 5 whp is more likely than 10 additional whp.

Either way, 15 whp gain from the intake is good and about what to expect.


Now as for the SSTT and AFE intake on 93 Octane making 400 crank hp?
Sorry, it isn't.

BMW has said (and Dinan apparently back it up in testing) that the BMW transmissions only lose about 11% drivetrain loss (for manuals) and about 12-13% for autos.

400 x .12 = 48
400 - 48 = 352

He won't dyno 352 rwhp.
I'd guess in the 330 range.
So figure crank hp of around 380 crank hp.

[07335]

No, not bragging rights. Just wanted a realistic picture of what these mods would deliver. I was hoping that it would be about 400bhp, with all the numbers advertised. Thanks for the replies.

[Jeff@Eurobahn.us]

Originally Posted by Driver72

The one fault I would say with Jeff's dyno test and assumption is getting up to twice the power from the AFE intake with OEM sized wheels a 13 degree cooler weather.
The "extreme" heat Jeff referred to was 90 degrees. His prior dyno tests were at 77 degrees.
That might make a difference of 2-3 rwhp.
And his oversized wheels MIGHT be another 2 whp.

So I think his assumption of an increase of 5 whp is more likely than 10 additional whp.

Either way, 15 whp gain from the intake is good and about what to expect.


Now as for the SSTT and AFE intake on 93 Octane making 400 crank hp?
Sorry, it isn't.

BMW has said (and Dinan apparently back it up in testing) that the BMW transmissions only lose about 11% drivetrain loss (for manuals) and about 12-13% for autos.

400 x .12 = 48
400 - 48 = 352

He won't dyno 352 rwhp.
I'd guess in the 330 range.
So figure crank hp of around 380 crank hp.

Joel at BHS in Houston is at 352WHP with dual cones, SSTT, 93 octane, and FMIC also stock wheels and tires. I think heat is really a big killer here If we spray down the factory intercooler we get another 6-8HP! I am going to have to finish working on our misting system.

Jeff
Eurobahn

[e90AW335i]

Originally Posted by Jeff@Eurobahn.us

Joel at BHS in Houston is at 352WHP with dual cones, SSTT, 93 octane, and FMIC also stock wheels and tires. I think heat is really a big killer here If we spray down the factory intercooler we get another 6-8HP! I am going to have to finish working on our misting system.

Jeff
Eurobahn

Joel was running the SSTT-plus when he got those numbers. Just so we have full disclosure.....

He got 340rwhp with the regular SSTT....

[uberschnell]

Honestly, this is some ricer math. Intakes really provide that extra HP at boost levels above what the TT runs at. I've driven an TT equipped car and a Procede equipped car. If butt dyno is any indication then if this set up gets anywhere near 400bhp then a similar Procede set up would have to be 450bhp+.

[rubber_ducky]

Originally Posted by 07335

No, not bragging rights. Just wanted a realistic picture of what these mods would deliver. I was hoping that it would be about 400bhp, with all the numbers advertised. Thanks for the replies.

What you have to understand is that there is a law of diminishing returns. Most vendors will publish hp increase over stock. But you might not see those same numbers when you're installing on an already modded car.

Only way to really know is to dyno the car.

[tek818]

Originally Posted by 07335

w/93 octane, I thought the SSTT put out 50hp. My thoughts we're this:

w/93 octane
SSTT - 50 hp
AFE dual cone intake - @20+hp
RPI scoops - @5hp

ricer math doesn't always add up...