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01-23-2009, 08:16 AM | #45 | |
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273/302 = 0.9 thus 362/0.9 = 402 hp, baselined from a 302hp initial value.
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01-23-2009, 08:53 AM | #46 | |
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Are other JB3 users getting these extreme dyno numbers from just a tune or is this a freak occurrence as the result of a custom dyno tune via the JB3? If it is that reliable and easy to gain 90whp, I don't understand why everyone else hasn't done it (besides the whole "unreliability" and "voided warranty" issue is in the back of everyone's minds).
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'06 EVO IX MR 10.51@127mph (1.40 60ft)
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01-23-2009, 09:11 AM | #47 | |
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Don't get me wrong, the JB3 is clearly adding about 100Hp at the crank, I'm just saying that it's wrong to make the assumption that the factory is under-rating the engine to begin with. :w00t: |
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01-23-2009, 09:15 AM | #48 | |
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These are pretty typical numbers. Guys, the problem with the high pressure fuel pumps isn't that they're being overloaded. It's a manufacturing defect that involves the seals. I'd be very surprised if the amount of fuel going through the pump (related to more HP) has any effect at all on the failure rate. |
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01-23-2009, 09:46 AM | #49 |
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I would not worry about the HPFP but the turbo. All tunes will increse the psi and thus dirve the turbo harder which may cause some problem down the road.
Any way, even I got the JB3, I will only occasionally drive my car hard and minimize the reliability issue.
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01-23-2009, 10:11 AM | #50 |
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Is it pretty routine to get over 400whp with just bolt-ons and a tune :iono: ?
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01-23-2009, 10:17 AM | #51 |
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01-23-2009, 11:21 AM | #52 |
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01-23-2009, 02:17 PM | #53 | |
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I'm pretty sure that given the temperatures, dyno conditions, and correction values, that the average drivetrain losses used are within the ballpark :wink:
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01-23-2009, 08:34 PM | #54 |
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Temp and humidity and dyno cal don't matter at all to drivetrain loss.
The fact is he put down X before the tune and Y after the tune on the same dyno on the same day with all those factors (roughly but close enough) the same. Thats a solid mathematical delta. You are right that it's hard (actually impossible) to tell what the drivetrain loss is for the 135i transmission until someone puts the N54 on multiple engine dynos, averages those numbers, and then puts the car on multiple chassis dynos and averages those numbers. Until someone does that you have to assume. Assumption is all we have without hard test data. And the general assumption for well built street manual gearboxes (which havent changed much in design since the Model-A except for better materials, machining processes, helical cut gears and synchronization) is 15% loss. Maybe the 135i tranny has 14% loss. Maybe even 13%, but thats giving it a hell of a lot. |
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01-26-2009, 12:39 PM | #56 |
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I was hoping i would receive my JB3 1.22 before a dyno day this last weekend, but i didn't.
So my JB3 v1.1 made 342 whp and 368 wtq. Not bad. |
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01-26-2009, 01:33 PM | #57 |
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01-26-2009, 08:16 PM | #59 | |
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With Map 5 and 6 with 1.22 your WHP should increase a good bit Map 4 and 6 should also give you even more TQ. Of course map 4 being tq biased, map 5 being hp biased, 6 being the best of both worlds. |
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