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3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

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Old 03-22-2008, 08:05 PM   #1 (permalink)
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Question Dinan for E36 M3?

I recently purchased a '98 M3/4 w/ Dinan Stage 2 ECM upgrade [incl. cold air intake & cat-back exhaust]. It feels great. But I'm curious about the specs. Any idea how the Dinian S2 tweaks affect HP &/or torque. Thanks!
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Old 03-22-2008, 11:43 PM   #2 (permalink)
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These number are from the Dinan website. They don't give numbers specific to the stage 2.

Stage 1 ECU from dinan
Maximum Horsepower Gain 10 @ 5000 rpm
Maximum Torque Gain 10 lb/ft @ 5000 rpm

CAI From Dinan
Maximum Horsepower Gain 12 @ 6000 rpm
Maximum Torque Gain 11 lb/ft @ 4500 rpm

Free Flow Exhaust from Dinan
Maximum Horsepower Gain 9 @ 6500 rpm
Maximum Torque Gain 7 lb/ft @ 6500 rpm
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Old 03-23-2008, 11:07 AM   #3 (permalink)
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Thumbs up Dinan 2 for E36 //M3

Thanks to thekid! I had searched the Dinan website and couldn't find any specs. cheers!
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Old 03-23-2008, 08:00 PM   #4 (permalink)
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I had to go to the individual page for each part to find the numbers and they don't list any for the stage 2 ecu. They could do a better job with that site. I am guessing that the max cai gain is with the stage 2 ecu upgrade. The stage 2 is meat of otherwise stock w/cai upgrade.
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Old 03-23-2008, 08:24 PM   #5 (permalink)
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Thanks, again. Maybe this is a little optimistic... but if I add up the numbers you found, I guess the Dinan bits raise my HP from 240 to ~270. Maybe sometime I can check it with a dino. Do you know how much loss is typical for 'at the wheels' measures compared to usual claims? 10-20%?
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Old 03-23-2008, 10:45 PM   #6 (permalink)
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Quote:
Originally Posted by fowens View Post
Thanks, again. Maybe this is a little optimistic... but if I add up the numbers you found, I guess the Dinan bits raise my HP from 240 to ~270. Maybe sometime I can check it with a dino. Do you know how much loss is typical for 'at the wheels' measures compared to usual claims? 10-20%?
I honestly don't recall what it is for the M3. There are a couple dyno sheets floating around here somewhere...

edit: 3 Series :: M3 (E36) 1996-1999 :: Engine Tuning :: Free Flow Exhaust

Dyno for HP and TQ

edit2: I just really looked at those numbers... those are fw numbers not rw numbers... back to searching.

Last edited by thekid; 03-23-2008 at 10:54 PM.
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Old 03-24-2008, 12:07 AM   #7 (permalink)
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my guess would be about 230ish hp and 220ish tq at the wheels for you. This is simply guessed over other dynos i have seen from reading... E36 M3 Dyno Sheet Library - Bimmerforums - The Ultimate BMW Forum
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