Throttle Response: DE/HR vs VHR

Kingbaby

I get a warm tingly feeling knowing you guys are trying to get the most out of the 370Z...

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07 Silver Alloy Nissan 350Z Nismo #0191 "Lin'da"
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DIGItonium

LOL... I seriously think there are times the ECU is refusing to open up regardless of accelerator position, which won't even wake up the turbos! >.<

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370Z Purist

I went to the sponsors section and some product (hyperrev? something like that) apparently can solve the sluggish throttle because something something about drive by wire changes how the throttle bodies behave since if you floor it blah blah it opens slower blah

I guess safety is a number one thing in general; massive response could make it very easy to break traction even at mild throttle levels of 40-70, especially once you're at the 300 wheel hp mark. Imagine instantaneous or mechanical throttle in a car with 500 wheel; instant slip and smoke.

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-Phil

"Since one of my brake light bulbs just went out, the forum told me that my piston rings are about to blow."

DIGItonium

Hence I wonder about torque management. Ever notice starting out in 1st gear at low revs with moderate throttle, and then after 1-1.5k the car accelerates harder? It's an awkward transition making it difficult to drive smoothly at times.

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370Z Purist

I noticed that in first and second gears. Seems more or less like perhaps the VVEL is adopting a different profile. I normally don't accelerate hard in first until I'm past 2k RPM, but that's just me.

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-Phil

"Since one of my brake light bulbs just went out, the forum told me that my piston rings are about to blow."

DIGItonium

That's right. I have this habit of getting the car moving at low revs so sometimes it bogs especially when it's pretty warm out.

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370Z Purist

Did a bit more reading; essentially a Cobb AccessPort, it's called HyperTech. I'm sure you've heard of it; a member did something of a review here:

Hypertech Part#62004 Review

It was pretty warm out here yesterday, drove around for the better part of two hours on both the suburban and freeway roads. Definitely felt sluggish once my oil temps hit 230, and refused to drop below 215 even on flat, steady cruises on the freeway at 60mph. It's pretty obvious that heat soak is a serious issue on Z cars. Apparently, the Hypertech does alleviate that flaccidity to some degree.

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-Phil

"Since one of my brake light bulbs just went out, the forum told me that my piston rings are about to blow."

asdfsammich

Random reading on the forums has me thinking an UPREV tune would be the easiest way to reduce the "delay" feel in 1st.

Do folks generally agree that on this or have I misinterpreted?



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DIGItonium

The UpRev tune has resolved it for other owners. Mine doesn't have this change, so GTM only set it up to support the turbo kit.

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asdfsammich

Ah, ok. It's like the editing of specific table values (for throttle), that could potentially help.

Haha, sorry. I admit my slow and noobish state of mind :/

I got a used 09 MT not too long ago and still trying to figure things out.

But, I fully agree, my 350 MT felt much more responsive (fun) on 1st/2nd when getting on it from the low rpms.







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