164.73 HP 178.39 TQ Auto Tranny

Reply Subscribe

Thread Tools

Search this Thread

07-24-2006, 08:51 AM

speed racer

Supporting Maxima.org Member

Thread Starter

iTrader: (10)

Join Date: Feb 2005

Location: Da Bronx

Posts: 1,279

164.73 HP 178.39 TQ Auto Tranny

I just got my car dynoed this past Saturday. I don't have the run files but the Humidity was 100% given that it was raining and about 82 degrees.

I have Stillen Pop Charger, Warpspeed Y-pipe, 00VI, and VAFC-II.

07-24-2006, 09:03 AM

Zack342

Supporting Maxima.org Member

iTrader: (89)

Join Date: Mar 2004

Location: Quincy, MA

Posts: 6,255

Seems kinda low considering your mods.

07-24-2006, 09:06 AM

speed racer

Supporting Maxima.org Member

Thread Starter

iTrader: (10)

Join Date: Feb 2005

Location: Da Bronx

Posts: 1,279

I know. It was done on a dyno-jet at T&R racing in Queens. The car feels strong, but I know I need to make more corrections with the A/F.

I have no codes either.

07-24-2006, 09:16 AM

SonicDust187

Supporting Maxima.org Member

iTrader: (11)

Join Date: Jan 2002

Location: Brooklyn, NY

Posts: 3,951

Talk about going lean in that 5k range.

07-24-2006, 09:25 AM

speed racer

Supporting Maxima.org Member

Thread Starter

iTrader: (10)

Join Date: Feb 2005

Location: Da Bronx

Posts: 1,279

The technician was telling me at what RPM to make leaner. I think my A/F readings are not real accurate. I'm going to get a Wideband 02 for accuracy and a catback. I have a feeling that my EGR and EGT is keeping my A/F ratio very rich. I think I was making corrections up -8 on the VAFC-II. Is that normal?

07-24-2006, 09:47 AM

Tatanko

Bacon Lover

iTrader: (34)

Join Date: Feb 2003

Location: State College, PA

Posts: 7,672

You should be much higher than that with your mods. I'm no tuning expert, though, or a dyno expert...so I'll leave that to others.

07-24-2006, 10:43 AM

NmexMAX

dot dot dot ...

iTrader: (22)

Join Date: Dec 2000

Location: Santa Fe, NM

Posts: 34,588

The dyno is low, and the CF is SAE... so that in theory rules out the high humidity.

The runfiles would be nice to see the A/F curve on a higher resolution.

Also, how's the KS, is the car running as good as it should? I realize you said it felt strong, but that could be because you're used to it 'feeling' that way and may not be missing the power you have lost over time (NOT mileage but dead sensors etc)

Tell the operator not be a

and take it to fuel cut next time.

07-24-2006, 11:08 AM

speed racer

Supporting Maxima.org Member

Thread Starter

iTrader: (10)

Join Date: Feb 2005

Location: Da Bronx

Posts: 1,279

I don't have any codes for a knock sensor. My Mileage has been great so the power loss has never been evident. The technician just stopped as soon as it hit red line he didn't even let it bounce off.

07-24-2006, 12:46 PM

NmexMAX

dot dot dot ...

iTrader: (22)

Join Date: Dec 2000

Location: Santa Fe, NM

Posts: 34,588

The tach is off, because you still had ~300 RPM left.

07-24-2006, 04:36 PM

#10

Kevlo911

Kevlo for President

iTrader: (36)

Join Date: Dec 2000

Location: Lake Orion, MI

Posts: 35,779

VI switch over should be around 4800-4900. You need to play with the VAFC more. Do you have the stock cat? where was the wideband?

07-24-2006, 04:49 PM

#11

speed racer

Supporting Maxima.org Member

Thread Starter

iTrader: (10)

Join Date: Feb 2005

Location: Da Bronx

Posts: 1,279

Yea I have the Stock Cat. They used a tailpipe sniffer for A/F ratio monitoring. My High Cam switch over is at 4800 RPM.

07-24-2006, 05:01 PM

#12

Kevlo911

Kevlo for President

iTrader: (36)

Join Date: Dec 2000

Location: Lake Orion, MI

Posts: 35,779

The stock cat throws off AF readings. So you might wanna do something about that.

07-24-2006, 05:04 PM

#13

speed racer

Supporting Maxima.org Member

Thread Starter

iTrader: (10)

Join Date: Feb 2005

Location: Da Bronx

Posts: 1,279

Quote:

Originally Posted by Kevlo911

The stock cat throws off AF readings. So you might wanna do something about that.

I thought it would. Right now I'm holding off on the power mods until next year. Need to work on the suspension and big brake kit. Than back to power mods.

07-24-2006, 05:52 PM

#14

NmexMAX

dot dot dot ...

iTrader: (22)

Join Date: Dec 2000

Location: Santa Fe, NM

Posts: 34,588

... What other 'power' mods did you have in mind?

Quote:

Originally Posted by speed racer

Right now I'm holding off on the power mods

07-24-2006, 06:35 PM

#15

speed racer

Supporting Maxima.org Member

Thread Starter

iTrader: (10)

Join Date: Feb 2005

Location: Da Bronx

Posts: 1,279

Headers, catback (which is not big HP) and 3.5 cams. That's for the near future.

07-24-2006, 06:39 PM

#16

streetzlegend

Senior Member

iTrader: (8)

Join Date: Dec 2003

Posts: 4,097

well the torque dosnt look that bad, could be higher. i got 167whp and 170wtq without the 00vi. with tuning with ur vafc and 00vi. you should defently be higher than that.

07-24-2006, 07:11 PM

#17

Kevlo911

Kevlo for President

iTrader: (36)

Join Date: Dec 2000

Location: Lake Orion, MI

Posts: 35,779

I had 201tq

07-24-2006, 07:30 PM

#18

NmexMAX

dot dot dot ...

iTrader: (22)

Join Date: Dec 2000

Location: Santa Fe, NM

Posts: 34,588

Didn't you have SMT-6?...

Quote:

Originally Posted by Kevlo911

I had 201tq

07-25-2006, 06:55 AM

#19

ajcool2

Senior Member

iTrader: (43)

Join Date: May 2004

Location: Baltimore, Md

Posts: 10,555

Somethings wrong with your car. I dynoed at 170hp with a ypipe and high flow cat. Not sure what it could be but its something.

07-25-2006, 07:30 AM

#20

Kevlo911

Kevlo for President

iTrader: (36)

Join Date: Dec 2000

Location: Lake Orion, MI

Posts: 35,779

Quote:

Originally Posted by NmexMAX

Didn't you have SMT-6?...

07-25-2006, 10:20 AM

#21

vipervadim

I like Maximas

iTrader: (10)

Join Date: Jul 2002

Posts: 831

For real Kevlo, it's like me dynoing and posting i got a stock 5th gen max

cound they have used a wrong Correction Factor?

07-25-2006, 11:07 AM

#22

NmexMAX

dot dot dot ...

iTrader: (22)

Join Date: Dec 2000

Location: Santa Fe, NM

Posts: 34,588

CF = SAE.. what we all use.

07-25-2006, 11:41 AM

#23

speed racer

Supporting Maxima.org Member

Thread Starter

iTrader: (10)

Join Date: Feb 2005

Location: Da Bronx

Posts: 1,279

Hey I'm not crazy about the dyno. I will just continue to do my thing and look into tuning and additional mods. Maybe next time I'll try a better dyno shop. I understand that alot of factors come into play so its no big deal.

07-25-2006, 12:10 PM

#24

speed racer

Supporting Maxima.org Member

Thread Starter

iTrader: (10)

Join Date: Feb 2005

Location: Da Bronx

Posts: 1,279

Quote:

Originally Posted by ajcool2

Somethings wrong with your car. I dynoed at 170hp with a ypipe and high flow cat. Not sure what it could be but its something.

That's all you had when you dynoed. Your auto or manual?

07-25-2006, 12:30 PM

#25

ajcool2

Senior Member

iTrader: (43)

Join Date: May 2004

Location: Baltimore, Md

Posts: 10,555

Quote:

Originally Posted by speed racer

That's all you had when you dynoed. Your auto or manual?

Yup thats it. Yes I'm an auto. There was an auto 5th gen there when I dynoed and got 175hp with one or 2 more mods than me.

07-25-2006, 03:17 PM

#26

NYPD-Arnold

iTrader: (8)

Join Date: Apr 2004

Posts: 5,818

Quote:

Originally Posted by ajcool2

Yup thats it. Yes I'm an auto. There was an auto 5th gen there when I dynoed and got 175hp with one or 2 more mods than me.

Well then the auto's VIAS was clearly f*cked. He dynoed an extra 5HP with the two mods, because he's pretty much got the same engine as you without that intake opening up. It doesn't have anything to do with your car responding well to the mods.

07-25-2006, 03:58 PM

#27

dlee275

Senior Member

Join Date: Dec 2001

Posts: 170

Quote:

Originally Posted by Kevlo911

The stock cat throws off AF readings. So you might wanna do something about that.

How can you accurately read AF with a stock cat on a dyno?

07-25-2006, 04:17 PM

#28

killerVQ30DE

Senior Member

Join Date: Jan 2005

Posts: 1,108

Quote:

Originally Posted by dlee275

How can you accurately read AF with a stock cat on a dyno?

I thought you had to weld a bung hole in to your piping before the cat and screw sensor in there when dynoing

07-25-2006, 05:49 PM

#29

speed racer

Supporting Maxima.org Member

Thread Starter

iTrader: (10)

Join Date: Feb 2005

Location: Da Bronx

Posts: 1,279

The dyno place used an exhaust sniffer to get reading of the A/F. Since I have a stock cat, it somewhat restricted my exhaust flow as well as providing not so accurate A/F ratio readings.