"Bogging" in first gear

bushman66 · 06-05-2012, 11:08 AM

Wondering if anyone else has experienced this. When I am taking off in 1st gear, the car seems to "bog" until the revs come up. This is with moderate to heavy throttle, I am not babying the car. It seems to have started after the CBE was installed. The feeling is the same as from my old muscle car days when the car ran too lean off the line.

I'm wondering if the ECU just needs to relearn with the new exhaust? I've tried to drive the car more aggressively to help it...if this is the case, how long before the ECU catches up with the mod?

All I know is, I will not be engaging in any stoplight action now...the car won't get off the line to save itself now...

All other behaviors, idle, driveability etc are normal. All I have now is this "hole" in first gear...

fuct · 06-05-2012, 11:18 AM

first was already a crummy gear in our cars. the loss in back pressure can give it a boggy feeling down low in the RPM's but nothing really that bad.

im sure youve tried just reving higher to negate the bogging, no?

bushman66 · 06-05-2012, 11:30 AM

Yes, even with a healthy dose of throttle...it just feels like a huge dead spot in the power until it "catches".

cheshirecat · 06-05-2012, 11:45 AM

try resetting the ecu and see if it relearns and compensates any better. it probably won't, but it's the easy first step before getting more into troubleshooting.

bushman66 · 06-05-2012, 11:46 AM

Yeah...going to try this tonight...

lhinojos · 06-05-2012, 02:41 PM

By any chance were you low on gas? I had the same thing but it only happens when I'm low on gas. I'm assuming it's because the car is alot lighter without gas so the clutch engages alot faster.

bushman66 · 06-05-2012, 03:52 PM

Quote:

Originally Posted by lhinojos

By any chance were you low on gas? I had the same thing but it only happens when I'm low on gas. I'm assuming it's because the car is alot lighter without gas so the clutch engages alot faster.

Nope. Full tank

jhh343 · 06-05-2012, 03:57 PM

Is your VDC on or off?

bushman66 · 06-05-2012, 04:20 PM

Quote:

Originally Posted by jhh343

Is your VDC on or off?

VDC on. Dry conditions...

IDZRVIT · 06-05-2012, 05:12 PM

Quote:

Originally Posted by bushman66

VDC on. Dry conditions...

Turn it off! I launch at 3000 rpm or so in my 6-sp. Never bogged yet. Dual 100' strips of rubber no problem with a stock Z.

jhh343 · 06-05-2012, 06:25 PM

Yeah, i would try turning vdc off. Be careful though.

Zrider79 · 06-05-2012, 07:55 PM

Ive had the same issue lately, it seems to start before installing my 1st mod. I was thinking it would help the issue. Some say a exhaust or tune will fix issue. I want to hear from someone that has had issue and is not resolved.

bushman66 · 06-05-2012, 07:56 PM

Its not due to the VDC...its an actual hole in the power delivery, the engine actually bogs down, then catches, even if I'm giving a lot of throttle input. It feels like the car is running too lean...

pedZ · 06-05-2012, 08:03 PM

I know exactly what you are talking about bushman. I notice the same problem at lower RPMs. Specifically in 1st, 2nd, or 3rd gear. I'm actually getting a Uprev tune tomorrow so I'll report back to this thread on whether it helps or not.

batman_4 · 06-05-2012, 08:29 PM

^ sub'd

06-05-2012, 11:08 AM	#1 (permalink)
bushman66 Base Member Join Date: May 2010 Location: AZ Posts: 112 Drives: 2012 370Z Red Sp Pkg Rep Power: 14	"Bogging" in first gear Wondering if anyone else has experienced this. When I am taking off in 1st gear, the car seems to "bog" until the revs come up. This is with moderate to heavy throttle, I am not babying the car. It seems to have started after the CBE was installed. The feeling is the same as from my old muscle car days when the car ran too lean off the line. I'm wondering if the ECU just needs to relearn with the new exhaust? I've tried to drive the car more aggressively to help it...if this is the case, how long before the ECU catches up with the mod? All I know is, I will not be engaging in any stoplight action now...the car won't get off the line to save itself now... All other behaviors, idle, driveability etc are normal. All I have now is this "hole" in first gear...

06-05-2012, 08:03 PM	#14 (permalink)
pedZ A True Z Fanatic Join Date: Jan 2011 Location: Southern California Posts: 3,366 Drives: 11 Tour/Spt/Nav/6MT Rep Power: 27	I know exactly what you are talking about bushman. I notice the same problem at lower RPMs. Specifically in 1st, 2nd, or 3rd gear. I'm actually getting a Uprev tune tomorrow so I'll report back to this thread on whether it helps or not. __________________ 2011 Brilliant Silver Touring/Sport/Nav/6MT --- Build Journal F.I. SS 18" CBE \| Takeda CAI \| Z1 25-Row Oil Cooler \| Swift Springs \| Hotchkis Sway Bars \| H&R 15mm DRS Spacers F&R \| RJM Clutch Pedal \| UpRev Tune

06-05-2012, 08:29 PM	#15 (permalink)
batman_4 A True Z Fanatic Join Date: Dec 2008 Location: McAllen Tx. Posts: 1,038 Drives: '09 PW 370Z Rep Power: 367	^ sub'd __________________ '09 6spd. Touring: Eibach / SPC / Motordyne / Berk / Z1 / Oneighty / Mines / SSR / Stillen / CFE

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06-05-2012, 11:18 AM	#2 (permalink)
fuct A True Z Fanatic Join Date: May 2009 Location: Sugar Land Posts: 3,692 Drives: 97' Ranger :) Rep Power: 23	first was already a crummy gear in our cars. the loss in back pressure can give it a boggy feeling down low in the RPM's but nothing really that bad. im sure youve tried just reving higher to negate the bogging, no?

06-05-2012, 11:30 AM	#3 (permalink)
bushman66 Base Member Join Date: May 2010 Location: AZ Posts: 112 Drives: 2012 370Z Red Sp Pkg Rep Power: 14	Yes, even with a healthy dose of throttle...it just feels like a huge dead spot in the power until it "catches".

06-05-2012, 11:45 AM	#4 (permalink)
cheshirecat A True Z Fanatic Join Date: Jan 2009 Location: Florida Posts: 1,428 Drives: N54 135i Rep Power: 292	try resetting the ecu and see if it relearns and compensates any better. it probably won't, but it's the easy first step before getting more into troubleshooting.

06-05-2012, 11:46 AM	#5 (permalink)
bushman66 Base Member Join Date: May 2010 Location: AZ Posts: 112 Drives: 2012 370Z Red Sp Pkg Rep Power: 14	Yeah...going to try this tonight...

06-05-2012, 02:41 PM	#6 (permalink)
lhinojos Track Member Join Date: Apr 2012 Location: Riverside, CA Posts: 559 Drives: 12 370z GM M6 Rep Power: 14	By any chance were you low on gas? I had the same thing but it only happens when I'm low on gas. I'm assuming it's because the car is alot lighter without gas so the clutch engages alot faster.

06-05-2012, 03:57 PM	#8 (permalink)
jhh343 Base Member Join Date: May 2010 Location: Austin Posts: 25 Drives: '10 370Z 6MT Rep Power: 14	Is your VDC on or off?

06-05-2012, 06:25 PM	#11 (permalink)
jhh343 Base Member Join Date: May 2010 Location: Austin Posts: 25 Drives: '10 370Z 6MT Rep Power: 14	Yeah, i would try turning vdc off. Be careful though.

06-05-2012, 07:55 PM	#12 (permalink)
Zrider79 Track Member Join Date: Jan 2011 Location: Pensacola florida Posts: 679 Drives: 2010 Rep Power: 15	Ive had the same issue lately, it seems to start before installing my 1st mod. I was thinking it would help the issue. Some say a exhaust or tune will fix issue. I want to hear from someone that has had issue and is not resolved.

06-05-2012, 07:56 PM	#13 (permalink)
bushman66 Base Member Join Date: May 2010 Location: AZ Posts: 112 Drives: 2012 370Z Red Sp Pkg Rep Power: 14	Its not due to the VDC...its an actual hole in the power delivery, the engine actually bogs down, then catches, even if I'm giving a lot of throttle input. It feels like the car is running too lean...