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EVOtech DYNO SHEET!!! is in! -- 325i ECU software chip
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09-02-2006, 12:24 PM | #45 |
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Well you have ot ask yourself always what is the rationale for the change in performance and is it plausable.
I have no idea whether this particular chip works or not but there is certainly a plausible explanation. The motor is otherwise identical to the 330 save the 3 stage intake which like many things may or may not be doing that much. Since the engine opens the intake valves under electronic control it is certainly reasonable to assume that BMW simply electronically crippled the 325. This chip then just restores it to 330 spec.
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09-02-2006, 12:38 PM | #46 | |
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09-02-2006, 12:54 PM | #47 | |
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09-02-2006, 01:24 PM | #48 |
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James, I just sent you an email. I do believe that this will only be a safe mod for those of us with a 325 STEP, because the 6MT tranny can't hold the power gains.
Last edited by Joe Bimmer; 09-02-2006 at 01:58 PM.. |
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09-02-2006, 01:33 PM | #49 | |
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09-02-2006, 01:39 PM | #51 | |
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09-02-2006, 01:55 PM | #52 | ||||
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It basically said that the 325i STEP tranny can handle more power than an OEM 325 6MT tranny. There was no discussion about 325 vs 330 drive train comparisons, just between the 325 step, and the 325 manual. EDIT: Click here Quote:
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Last edited by Joe Bimmer; 09-02-2006 at 02:11 PM.. |
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09-02-2006, 01:59 PM | #53 |
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there is no way that the drivetrain in the 325 would be so close to its max potential as you suggest. I'd be surprised if there is any difference between the 325 and 330 drive trains
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09-02-2006, 02:19 PM | #54 |
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True ####
I know every one is very skeptical about these # but they are real and solid! these are on a dynodynamics dyno and in about 90 degree Summer heat, with 50 to 60 % humidity. and this is not just one run, the power is consistent run after run if you look at the final dyno run on the dyno sheet the run is #21. be confident that you will see very similar increases on you 325.
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09-02-2006, 02:47 PM | #55 | |
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09-02-2006, 02:50 PM | #56 |
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What kind of an improvement has either of the tested cars (325/330) gained at the track?
Not that I don't believe the results but I've seen just about every dyno trick there is for graphs so what kind of a MPH and ET improvement has it gained off the dyno? (Before/After, etc...) What about day to day driving? Gas mileage? (Gain/Loss?) Cost? Who can install it or does it have to be done locally? Labor for install? Etc.... We need real world tests and more info about the mod if they want to sell it.....
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09-02-2006, 02:52 PM | #57 | |
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For the same reason I don't believe that 330i engines will see similar gains, expect something in 10-15hp range. Anyhow it's great to see somebody has finally accomplished to do this re-map, great work! |
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09-02-2006, 02:53 PM | #58 |
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step dyno
Are the numbers for step really accurate/obtainable? Im still under the impressions that the auto tranny in the 325i/330i was labeled inaccurate/difficult to dyno because it shifts to the next gear when you try to rev it to max. Has something changed from the time some members did a dyno on the fajita intake to now?
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09-02-2006, 03:01 PM | #59 | |
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09-02-2006, 03:09 PM | #60 | |
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09-02-2006, 03:09 PM | #61 | |
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In any event, after reading through this thread I am convinced that this re-flash will definitely do SOMETHING noticeable to a 325, but whether or not it will add a full 40hp remains to be seen. However, the truth about the 325's manual trans is that it IS different from the 330's, and if you do a search on Bimmerfest.com around the time of my previous post, you can find several sources that can confirm this. But if it were my 325, I'd probably take the chance anyway. |
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09-02-2006, 04:14 PM | #62 |
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E90 325i:
Transmission Manual gear ratios - I/II 4.32/2.46 :1 Manual gear ratios - III/IV 1.66/1.23 :1 Manual gear ratios - V/VI/R 1.00/0.85/3.94 :1 Manual gear ratios - Final drive ratio 3.23 :1 Automatic gear ratios - I/II 4.17/2.34 :1 Automatic gear ratios - III/IV 1.52/1.14 :1 Automatic gear ratios - V/VI/R 0.87/0.69/3.40 :1 Automatic gear ratios - Final drive ratio 3.73 :1 E90 330i: Transmission Manual gear ratios - I/II 4.35/2.50 :1 Manual gear ratios - III/IV 1.67/1.23 :1 Manual gear ratios - V/VI/R 1.00/0.85/3.93 :1 Manual gear ratios - Final drive ratio 3.15 :1 Automatic gear ratios - I/II 4.17/2.34 :1 Automatic gear ratios - III/IV 1.52/1.14 :1 Automatic gear ratios - V/VI/R 0.87/0.69/3.40 :1 Automatic gear ratios - Final drive ratio 3.64 :1 |
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09-02-2006, 04:19 PM | #63 | |
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09-02-2006, 05:39 PM | #64 |
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I'm keeping a VERY close eye on this development. I was confident that something would come out that would untap the 325's potential, and this MAY be it. Personally, I would still need for at least one known forum member to test this out (Diesel??). If its true, I'm down 100%, and will buy it as long as they keep it sub 1k.
If it is indeed accurate, congratulations to the evotech team on a job well done! I was actually thinking it would take up to 2 years to have a mod to untap the 325i's potential for 40+ horses, this, after about 1 year is excellent news. One thing fellas, please keep this thread strictly technical and informative, lets not let this thread digress into 325 vs. 330, or "see, i told you" threads. That has no productive value. bump for more productive comments and/or queries.
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09-02-2006, 06:15 PM | #65 |
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ohh, so this dyno was done on a 325 in STEP!, which means people with 6MT could be expecting a little more power delivered to the wheels? if i lived close to Evo, i would definatly stop by and have them update it on site, any cali owners should do that!, once someone gives the "OK" im all over this, i think the eisenmann SR pipes are going to have to wait a little bit....:rocks: :rocks: :rocks:
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09-02-2006, 06:34 PM | #66 | |
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http://www.evotech.de/de_2_3_8.htm |
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