Quote:
Originally Posted by Knifeedge2k1
You're definitely not making 320-350hp mate
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I know you have a lot of experience in this area, but are you sure it can't be making around 320 at least?
That estimate I provided was based on BMW's official numbers on the car (which I believe are underrated) as well as Bootmod3's official tune percent increase numbers.
From Bootmod3's website:
20i models:
Stage 1 91 octane: up to 42% HP / 46% TQ
Stage 1 93 octane: up to 46% HP / 48% TQ
Stage 1 E30 octane: up to 53 % HP / 50% TQ
Stage 2 91 octane: up to 50% HP / 48% TQ
Stage 2 93 octane: up to 54% HP / 50% TQ
Stage 2 E30 octane: up to 60% HP / 55% TQ
30i models:
Stage 1 91 octane: up to 14% HP / 26% TQ
Stage 1 93 octane: up to 16% HP / 26% TQ
Stage 1 E30 octane: up to 20% HP / 28% TQ
Stage 2 91 octane: up to 16% HP / 28% TQ
Stage 2 93 octane: up to 18% HP / 28% TQ
Stage 2 E30 octane: up to 22% HP / 30% TQ
What was going through my mind was that stock...the b46 (basically a 20i engine) makes 184hp...so on a stage 1 tune, the b46 alone should be making approximately 184(1.46) = 268HP (I run the car on 93 all the time).
From there, the electric motor is supposed to make 111hp and 184lb-ft of torque, and from my experience flooring it.....the car only will apply all 111hp if its in a specific gear locked in for a considerable amount of time...otherwise it will only supply around 64hp (Calculated by taking BMW's net HP amount for the car and subtracting it from the stock b46 number(248 - 184 = 64)).
So I added 268 + 64 to get 332 at the minimum (or maximum if my claims about the electric motor are false)
And then I added 268+111 to get a....quite unreasonable 379HP as a maximum.
I calculated the torque the same way, and I came up with like 214(1.48) = 316+ (310lb-ft stock net torque - 214lb-ft stock engine net torque = 96) = 412lb-ft of torque as a min net torque, and then once again that maximum torque value of 316+184 = 500...(that seems impossible though)
I originally accepted the fact that my car was making around 350HP and 420lb-ft of torque though since my car managed to hit 0-60 in 4.78 seconds, which is around the same time as a stock 540i which has more power, but carries a lot less weight (3847lbs vs 4550lbs) (I managed to do a better-timed run compared to the previous run I posted above).
I also believed around 350 might not be impossible when I saw another 530e on a stage 2 tune making 399HP and almost 450lb-ft of torque
http://www.facebook.com/mgflasher/po...9804602623732/
And there are lots of other owners that have done either stage 1 or stage 2 tunes that are all pulling above 320HP easily. I'm pretty sure you know this...but the 530e compared to the 330e has a electric motor with a larger output, so that might be the extra 20-30HP that we are missing.
Again, you have more experience with this stuff, so please advise. (I'm only 19 and willing to learn)
