Gas Pedal Delay

IcedZ

My '07 350 didn't either. I can't imagine that it's by design but probably a by-product of something else.

m4a1mustang

Well, it certainly doesn't feel natural. If there wasn't an initial surge of power I would attribute it to just a lack of low-end torque, but since we get that surge followed by an immediate loss in power it has to be something else.

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IcedZ

Agreed! Very "artificial" feeling, as DIGI stated.

RedBullRR

I've heard a UPREV tune can remove that, is it designed in the ECU Mapping?

m4a1mustang

Any of the tuners can modify the rev limit. Whether he has a tune or he just bumped up the limiter we won't know unless we ask.

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IcedZ

It's been a day and a half since I changed my K&N air filters to "stock" (I purchased the cheapest air filters from NAPA). I have not experienced the lag issue yet! I haven't driven a whole lot either though. I'll update again in a couple days. If it's something that simple, I'll be very happy but irked.

m4a1mustang

Did you by any chance reset the ECU when you did the filter change?

I noticed whenever I reset the ECU the car would feel good for a little while before reverting back to the same BS.

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IcedZ

I thought about it, but didn't ultimately.

IcedZ

Update: I just ran some errands during lunch, and I did experience it again. It didn't seem AS bad as sometimes. Could be just hopeful thinking, or the combination that it was just starting on the last stretch of my drive. I would say air filters are NOT the problem (as guessed earlier by others).

zero

I'm not sure if you see this info on technosquare, <TECHNOSQUARE - ECU FAQ>

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IcedZ

Wow, very interesting... and exciting.

Jamaica

I have heard good things about technosquare.

DIGItonium

I just wanted to touch up on this topic in regards to updates about my recent experiences for the past couple of months. As usual, my drives are to and from work in a span of about 15-20 minutes of driving. I also ran errands as well, so that adds about an additional 15-30 min of driving.

We had a couple of unusually warm weather over a week ago with near 70s. I can get the oil temps to hit 200. Then I've also driven the car then the temps were in the 20s and 40s.

The car has not been acting up lately. Throttle and electronic pedal feels is very good with hardly any dead zone or hesitation. The car immediately responds under 3k RPM when I give it more throttle. I get my 91 octane fuel from the same stations: Conoco and Philips. I don't see a 10% ethanol sign at these stations compared to Quick Trip. I'm not sure if that or winter mix makes a difference either.

What's this "tip in" knock that some owners has been experiencing? Is a case where the ECU quickly retards timing on throttle tip in? I was reading the Stillen SC thread, and owners talk about increased "tip in" knock as the engine gets hotter from longer duration of driving.

If so, what's the most economical way to get a visual or log engine knock or events where the ECU retards timing due to various factors including knock?

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6spd

buy a really expensive real time scanner, im talking 3-5k $$ machinery.

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IcedZ

I'm experiencing the issue every single day still. I also had my steering column solenoid lock up. They also said they couldn't get my driver door to replicate the window not rolling up all the way, so couldn't fix that. I will be at 36k miles within the next 2 weeks. I think I've decided to look for a new car. With all these issues and Nissan not helping, I'm giving up I think.