Loss in acceleration + throttle response ??

m4a1mustang · 07-06-2010, 02:58 PM

Quote:

Originally Posted by Endgame

Puny V6? I disagree; 3.7 liter is not a puny V6. And, I would rather have my 'fun' in the mid range and top end.

This coming from a guy that had a Stang GT to S13 w/SR20DET to RX8 to 370z.

I admit, puny was an overstatement.

I just find the car's behavior below 4,000 RPM to be quite interesting. It has the power to GO, and does initially, but something happens and it stops... then a few seconds later it GOES. I wonder if a tune would take care of it.

roptics · 07-07-2010, 07:42 PM

Same issue here but it didn't start until around 5k (first oil change at 3700m). It used to be intermittent with the worst area 3 - 4k. Sometimes it is low power but progressive with a kick and other times it is just a complete dog unless I completely step on the throttle and get it to at least 6k or something. With the AC on the just seems like no power at any RPM. The high heat in the NE right now has definitely made it worse. I stay with Shell first and Exxon as my second choice. I'll try the battery disconnect tomorrow.

Robert

Zsteve · 07-08-2010, 03:29 PM

Quote:

Originally Posted by m4a1mustang

I admit, puny was an overstatement.

I just find the car's behavior below 4,000 RPM to be quite interesting. It has the power to GO, and does initially, but something happens and it stops... then a few seconds later it GOES. I wonder if a tune would take care of it.

I have the AAM tune and if I jump on the car from a stop and keep on it I dont feel like it falls on its face in the 3K to 4K range. I think our cars could just use some more low end TQ overall.

Now if Im driving normal and the rpms are low and I stomp on it it does take a second to kick in but most cars are like that. If I know I might need to jump on it I put the car into manual mode and ensure the rpms are around 3k already then jump on it.

Greed · 07-06-2010, 02:58 PM

I've had problems w/ acceleration and throttle response from time to time, but it was due to filling the tank w/ gas the car wasn't "happy" with. Once she got a tank full of the good stuff, throttle response and acceleration went back to normal, which is quite speedy and lively. Trouble is, gas stations are like a box of chocolates...

I may be way off base, but, try a different brand of gas and see it helps. I've had great results w/ Sunoco 93. I just wish there were more Sunocos in my neck of the woods.

DIGItonium · 07-07-2010, 11:59 PM

I read somewhere the Camaro SS owners have the same issue with the throttle delay up to 3k RPM. Here's a thread:
Throttle Lag - Camaro Forum - 2011 Camaro 2010 Camaro / Camaro Z28 SS Forums - Camaro5.com

Zsteve · 07-09-2010, 09:22 AM

try some MAF sensor cleaner on the sensors and see how it does. You can get it at any car store.

IcedZ · 07-09-2010, 09:46 AM

Quote:

Originally Posted by Zsteve

try some MAF sensor cleaner on the sensors and see how it does. You can get it at any car store.

Did yesterday. Helps a little, but as soon as it warms up, the problem is still there.
I'm going to try Sunoco Gas. There is only one station in town, but I'll go there for the next few fill-ups.

dlmartin81 · 07-09-2010, 02:13 PM

I took out my air filters today and they were a little dirty, but not extremely. Anyhow, after cleaning them, I noticed a difference in responsiveness. I was noticeably better.

Oh.....there was also a leaf stuck in the left intake duct.

IcedZ · 07-09-2010, 02:56 PM

Quote:

Originally Posted by dlmartin81

I took out my air filters today and they were a little dirty, but not extremely. Anyhow, after cleaning them, I noticed a difference in responsiveness. I was noticeably better.

Oh.....there was also a leaf stuck in the left intake duct.

As stated in the other thread, it's not a lack of response. This car needs RPM's; that's understood. It's a weird jerk of power at ~3k RPM. There is almost zero response at the start, then at about 3k RPM, you get pinned back in your seat. It's not smooth at all. This doesn't happen to me until I've driven for about 20 mins. At first it's fine, it's a lot smoother. But it seems after I reach normal operating temp, it gets lagged.

ishthemienguy · 07-09-2010, 03:18 PM

Quote:

Originally Posted by IcedZ

As stated in the other thread, it's not a lack of response. This car needs RPM's; that's understood. It's a weird jerk of power at ~3k RPM. There is almost zero response at the start, then at about 3k RPM, you get pinned back in your seat. It's not smooth at all. This doesn't happen to me until I've driven for about 20 mins. At first it's fine, it's a lot smoother. But it seems after I reach normal operating temp, it gets lagged.

Nissan VTEC Kicked in YO! sorry just had to say that...

dlmartin81 · 07-09-2010, 03:45 PM

Quote:

Originally Posted by IcedZ

As stated in the other thread, it's not a lack of response. This car needs RPM's; that's understood. It's a weird jerk of power at ~3k RPM. There is almost zero response at the start, then at about 3k RPM, you get pinned back in your seat. It's not smooth at all. This doesn't happen to me until I've driven for about 20 mins. At first it's fine, it's a lot smoother. But it seems after I reach normal operating temp, it gets lagged.

I hear what you're saying. I had those symptoms as well. However, I haven't noticed them as much (or at all) as of 1.5 months ago after I switched to a better fuel (Sunoco). Also, it was noticeably much more responsive in lower RPMs after I cleaned the air filters. It could be a combination of both things....better fuel and intake air flow.

I think my next mod will be CAI......probably STILLEN's because of their filter placement. I don't want to risk sucking up water on rainy days, as it would be more prone with the Injens or AEMs.

Zsteve · 07-09-2010, 07:22 PM

try some fuel additive to increase the octane and see if that helps. If so then you know it was the gas.

taikien · 07-11-2010, 01:08 AM

Turn off the vdc and try it.i noticed a difference when i tried mine.

fullmonty · 07-11-2010, 01:10 AM

Quote:

Originally Posted by taikien

Turn off the vdc and try it.i noticed a difference when i tried mine.

Its worth a try but I don't think its the traction control

IcedZ · 07-11-2010, 07:36 AM

Quote:

Originally Posted by taikien

Turn off the vdc and try it.i noticed a difference when i tried mine.

I always turn mine off anyway.

07-07-2010, 11:59 PM	#5 (permalink)
DIGItonium A True Z Fanatic Join Date: Jan 2009 Location: Kansas Posts: 3,800 Drives: 09 Z34-TT 6MT Rep Power: 43	I read somewhere the Camaro SS owners have the same issue with the throttle delay up to 3k RPM. Here's a thread: Throttle Lag - Camaro Forum - 2011 Camaro 2010 Camaro / Camaro Z28 SS Forums - Camaro5.com __________________

07-09-2010, 09:22 AM	#6 (permalink)
Zsteve A True Z Fanatic Join Date: Sep 2009 Location: TX Posts: 3,298 Drives: the 2 balled club Rep Power: 22	try some MAF sensor cleaner on the sensors and see how it does. You can get it at any car store. __________________ 2010 LS3 C6 Silver coupe corvette

07-09-2010, 02:13 PM	#8 (permalink)
dlmartin81 Track Member Join Date: Dec 2008 Location: Chalfont, PA Age: 43 Posts: 923 Drives: 09 370Z Rep Power: 608	I took out my air filters today and they were a little dirty, but not extremely. Anyhow, after cleaning them, I noticed a difference in responsiveness. I was noticeably better. Oh.....there was also a leaf stuck in the left intake duct. __________________ Dan F.I. SS CBE 18-R \|\| Llumar 40% tint

07-09-2010, 07:22 PM	#12 (permalink)
Zsteve A True Z Fanatic Join Date: Sep 2009 Location: TX Posts: 3,298 Drives: the 2 balled club Rep Power: 22	try some fuel additive to increase the octane and see if that helps. If so then you know it was the gas. __________________ 2010 LS3 C6 Silver coupe corvette

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Nissan Consumer Affairs Oil Cooler Response	Wally	Nissan 370Z General Discussions	157	06-24-2010 08:59 AM
Loss of 22.5% HP	lando76	Nissan 370Z General Discussions	49	08-25-2009 08:17 PM
acceleration times	Bushguts	Other Vehicles	6	07-24-2009 07:06 PM
Stillen exhaust - gain vs loss?	FricFrac	Intake/Exhaust	19	06-08-2009 12:24 AM
Acceleration Videos	DonWolfo	Nissan 370Z Photos / Spyshots / Video / Media Gallery	4	03-04-2009 12:09 PM

07-07-2010, 07:42 PM	#2 (permalink)
roptics Base Member Join Date: Mar 2009 Location: NJ Posts: 13 Drives: 370z with Sport Pack Rep Power: 289	Same issue here but it didn't start until around 5k (first oil change at 3700m). It used to be intermittent with the worst area 3 - 4k. Sometimes it is low power but progressive with a kick and other times it is just a complete dog unless I completely step on the throttle and get it to at least 6k or something. With the AC on the just seems like no power at any RPM. The high heat in the NE right now has definitely made it worse. I stay with Shell first and Exxon as my second choice. I'll try the battery disconnect tomorrow. Robert

07-06-2010, 02:58 PM	#4 (permalink)
Greed Base Member Join Date: Sep 2009 Location: North Carolina Posts: 95 Drives: 2009 370z 01/18/09 Rep Power: 16	I've had problems w/ acceleration and throttle response from time to time, but it was due to filling the tank w/ gas the car wasn't "happy" with. Once she got a tank full of the good stuff, throttle response and acceleration went back to normal, which is quite speedy and lively. Trouble is, gas stations are like a box of chocolates... I may be way off base, but, try a different brand of gas and see it helps. I've had great results w/ Sunoco 93. I just wish there were more Sunocos in my neck of the woods.

07-11-2010, 01:08 AM	#13 (permalink)
taikien Base Member Join Date: May 2010 Location: dallas Posts: 10 Drives: 370z Rep Power: 16	Turn off the vdc and try it.i noticed a difference when i tried mine.