02-10-2016, 01:23 AM | #897 | |
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I know this because 100% of my driving is logged >.< |
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02-10-2016, 02:25 AM | #898 |
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I don't have logging so I have to estimate pedal travel. If the first few mm is slop in the pedal spring (call it 15% slop), then 25% minus 15% is 10%. Put another way, I accelerate fast enough so the Prius and minivan on either side pull away from me through first gear (when I was stock we'd be dead even).
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02-10-2016, 02:52 AM | #899 | |
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02-10-2016, 03:00 AM | #900 | |
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02-10-2016, 06:02 AM | #901 |
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Im a distributor for Edelbrock here in my country Indonesia. As well as a Ecutek Tuner.
For the dead pedal , lag or unresponsive issue on the edelbrock sc even after you pass the throttle learning period .you may want to check your bypass valve under the plenum . make sure it can move back and forth smoothly, spray a silicone lubricant if necessary . and check the vacuum hose from the back of the plenum to the valve assembly. |
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02-10-2016, 12:59 PM | #902 |
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If you guys are having issues with tip-in throttle. Post a log so we can have a look. Just do a quick tip in with %100 throttle from 2300rpm to 4000rpm in whatever gear. Please log tps, map (kpa), rpm, AFR, intake temp., advance multiplier, ignition timing, etc....
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02-10-2016, 02:20 PM | #903 | |
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02-10-2016, 03:26 PM | #904 | |||||
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Looks like I'm a little late to the party, but I'll weigh in anyway
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As for now, I'm happy with my CARB tune. |
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02-10-2016, 04:22 PM | #905 |
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That was my original thought process and I dismissed the lull as an illusion. Til I compared with my friend's FR-S and paid special attention to keep shifts below when the kick normally comes in around 3-3.5k. The difference is subtle and nothing to lose sleep over but it is there. The only way to feel the difference is to drive a stock one yourself.
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02-10-2016, 04:29 PM | #906 |
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The descriptions above sound just like how mine feels on the CARB tune.
I noticed once when sitting and logging with the car ON but engine not started that when I slammed the accelerator pedal down the actual throttle plate would move about 1/2 a second later (you can hear it move). I thought it was kind of interesting as a direct cable driven system would be immediate and figured a fly by wire system would be the same, I guess not! I wonder how much this contributes to the feeling of "lag". I agree with swithclanez it's nothing to lose sleep over, but it's certainly not as smooth as any OEM power delivery I've ever felt. Also good to note that at high RPM shifts there is no lag whatsoever, at least for me... |
02-10-2016, 06:20 PM | #907 |
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I wonder if it's done on purpose to protect the drivetrain during launch attempts from a standing start.
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02-10-2016, 06:53 PM | #908 | ||
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I haven't had any of those problems with the CARB tune. I guess I'm in the minority that likes the less sensitive pedal I was thinking that as well. This is my first SC'd car (I've only had NA and turbos in the past), so I've always thought that boost builds along with rpms, so low rpms= low boost =not as much power/not as responsive? Would parasitic drag from the SC'd also play in all of this? |
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02-11-2016, 09:28 AM | #909 | |
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Looks like I'm a bit behind on keeping up with this thread. Yes, I had similar hesitation with the CARB tune. I also have it with my Delicious FNG tune. It is the worst for me in 1st gear, which is not smooth on constant throttle accel in non-WOT conditions. My assumption was that it is something to do with the base file used for the tune. As far as I know, ECUtek provides a 'base' forced induction map for their tuners to start from, so there may be something in the file that is common between both the CARB and DT files that are causing it. Unfortunately, both tunes are locked from viewing, and I am not knowledgeable enough outside of your standard maps to know what would contribute to the feeling described. I have driven a Cosworth supercharged car as well, and didn't notice the same hesitation, so that gives me confidence that there is the ability to tune it out. But, without visibility to any of the tunes, its hard to compare maps. Maybe the guys at DT/Edelbrock could collab on looking into it.
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02-11-2016, 02:29 PM | #910 | |
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It's funny, this is one of the reasons I absolutely despise drive-by-wire systems. In... let's just say a lot of years driving, I've never once had a throttle response issue in any cable driven car. Carb or TB, pedal travel to response was always nice and linear. Never liked the idea of letting the computer decide what you really wanted. Back to your regularly scheduled thread... |
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boost, byebye jackson racing, e-force, edelbrock, forced induction, supercharger |
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