Wow, that is certainly a great result! I wonder why the ECU kept pulling timing, that stinks it was limiting your gains a bit.
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01-29-2011, 09:35 PM | #31 (permalink) |
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Wow, that is certainly a great result! I wonder why the ECU kept pulling timing, that stinks it was limiting your gains a bit.
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01-30-2011, 04:55 AM | #33 (permalink) |
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Bigger tube will slow the airflow and the ECU will interpret that as less air, so it could be reading less load and running less timing. You'll probably have to rescale things a bit.
Any driveability quirks at part throttle?
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01-30-2011, 08:19 AM | #34 (permalink) | |
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Quote:
there is still some spikes in the table that I need to fine tune. I had to remove the oversize TB because I did not had time to connect the hose coolant and bleed the system. It was only to look at the power gain in general. one thing for sure is the Idle screw need to be adjusted ! I was running 1200-1300rpm Idle. other than that everything is running fine. |
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01-30-2011, 01:33 PM | #35 (permalink) | |
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You may be stuck with a higher idle -- probably not much lower than 1K after adjusting. No luck just tuning the ECU map for it? Wonder why it was pulling timing? Light knock maybe -- how lean was it approaching fuel cut? Anyway -- great job!
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01-30-2011, 02:35 PM | #36 (permalink) | ||
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there is enough adjustment on both screws on each TB to properly reduce the idle quite lot. there shouldn't have any problem getting back the low rpm idle as for the tuning with a lower idle ,, no we didn't went too much in the tuning because the time was limited. I did what I could but since I'm going back on the dyno in April , that will give me the time to fix those little details ! Quote:
it was getting close to 12.9-13.0 at 6800rpm in uprev which is about 13.4 on my WB Last edited by Megan370z; 01-30-2011 at 02:42 PM. |
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01-30-2011, 09:51 PM | #37 (permalink) | |
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Messing with the set screws may screw up TPS calibrations... just something to think about if you have to move things by more than very small increments. Hmm, not particualy lean for a NA car, but maybe a few 10ths of a point leaner than the ECU likes to see at WOT? I seem to be making best power on a steady 13.2 - 13.4 across the board at WOT (according to tailpipe sniffer, so not that lean in reality) with several extra degrees of timing down low through mid range, and only 1-2 over stock up top.
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01-30-2011, 09:56 PM | #38 (permalink) | ||
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Quote:
Quote:
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01-30-2011, 10:01 PM | #39 (permalink) |
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Hmm. Not sure then. I'm convinced that maximum advance is seriously reigned in by VVEL. It's gotta be reading load differently or referencing some other look-up table that can't be accessed then. Hmm. Good luck -- keep us posted
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02-02-2011, 01:35 PM | #42 (permalink) |
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Megan,
your dyno number before your CAI was installed was 280 (with stock intake), and you got 299 after install and tune. Do you think you would've gained similar numbers if you had Gen 3 installed and tuned after dyno at 280? And also given the fact that you had your own, similar to Motordyne, intake manifold was installed but you didn't have a chance to tune it, your 299 also accounts for the 'intake manifold with tune' Last edited by draper; 02-02-2011 at 01:43 PM. |
02-02-2011, 04:36 PM | #43 (permalink) | ||
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Remember I went on the car with a not fully tuned ECU with the new mods. since my CAI has a bigger MAF Tube , the MAF table need to be tuned . its not an easy process during winter time with the street tuning that I'm doing (slippery sometime and always in the lookout for cops and other witness). with a complete tune, I'm positive that gain will be half more than the Stillen Gen3 Quote:
and even those with HFC did not gain much anyway because the M370 shift the peak torque point at a lower RPM range , lower torque = lower HP |
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02-03-2011, 11:30 AM | #44 (permalink) |
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cool, looking forward to the results. Every bit of HP counts for NA.
so the intake manifold is not worthwhile, results are mixed with this one and are not same across the board. And I don't think anyone got their ecu tuned after installing the Motordyne manifold. It might be because of some cars ecu not adapting to the new mods and would result in good gains after tune whereas some would adapt well to the mods and not gain much after tune, as this is a general reason often said by tuners. |
09-16-2011, 06:17 PM | #45 (permalink) |
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so, not to be a necro but this looks very interesting. What ever happened???
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