Dyno Discussion and Slips Discussion and a moderated "Dyno Slips" sub-forum to allow for posting of dyno slips.

Numbers in. Somethings not right.

Old Jul 12, 2008 | 01:55 PM
  #1  
kzoosho's Avatar
Thread Starter
Senior Member
iTrader: (16)
 
Joined: Feb 2007
Posts: 4,029
From: Grand rapids Mi
Numbers in. Somethings not right.

Well today i took my car to be dynoed and well i wasnt to happy. I dont know if it was just because their dyno wasnt reading right hence the no tq numbers. Well heres the graph. Also i am going to try to pull so more fuel. My first pull was so rich that i pegged their tail sniffer. Well here she is. I was only at 10psi also.


Old Jul 12, 2008 | 05:26 PM
  #2  
t6378tp's Avatar
Turbo 3.5
iTrader: (69)
 
Joined: Dec 2005
Posts: 7,785
From: Philly
I'm guessing you were shooting for around 350whp
Old Jul 12, 2008 | 10:25 PM
  #3  
kzoosho's Avatar
Thread Starter
Senior Member
iTrader: (16)
 
Joined: Feb 2007
Posts: 4,029
From: Grand rapids Mi
Originally Posted by t6378tp
I'm guessing you were shooting for around 350whp
Well i found out my tq once i went and looked at the video. I made 310wtq@5600rpm
Old Jul 13, 2008 | 08:08 AM
  #4  
Tatanko's Avatar
Bacon Lover
iTrader: (34)
 
Joined: Feb 2003
Posts: 7,662
From: State College, PA
I take it this was your turbo car?
Old Jul 13, 2008 | 08:12 AM
  #5  
kzoosho's Avatar
Thread Starter
Senior Member
iTrader: (16)
 
Joined: Feb 2007
Posts: 4,029
From: Grand rapids Mi
Originally Posted by Tatanko
I take it this was your turbo car?
Yes it is. I guess i am just trying to make sure everything is god be fore i add spray. I mean it pulls hard but i just thought it would make more power than that.
Old Jul 13, 2008 | 09:46 AM
  #6  
95BLKMAX's Avatar
Senior Member
iTrader: (10)
 
Joined: Jun 2003
Posts: 2,317
From: Miami, FL
What I want to know is what in the world is going on after 5500? You have a MEVI, is it functional?

The turbo is massive do it's def not choking. At that power level, those injectors are more than enough and the a/f proves it. Are you pinging up there or something?
Old Jul 13, 2008 | 12:46 PM
  #7  
kzoosho's Avatar
Thread Starter
Senior Member
iTrader: (16)
 
Joined: Feb 2007
Posts: 4,029
From: Grand rapids Mi
Originally Posted by 95BLKMAX
What I want to know is what in the world is going on after 5500? You have a MEVI, is it functional?

The turbo is massive do it's def not choking. At that power level, those injectors are more than enough and the a/f proves it. Are you pinging up there or something?
It opens at idle but it may not be staying open. I am going to ttry to figure that out also. I may just tie it open since it wont hurt me much being boosted.
Old Jul 13, 2008 | 09:18 PM
  #8  
95BLKMAX's Avatar
Senior Member
iTrader: (10)
 
Joined: Jun 2003
Posts: 2,317
From: Miami, FL
Originally Posted by kzoosho
It opens at idle but it may not be staying open. I am going to ttry to figure that out also. I may just tie it open since it wont hurt me much being boosted.


that my friend sounds BRILLIANT!!!
Old Jul 14, 2008 | 05:23 AM
  #9  
MDeezy's Avatar
Senior Member
iTrader: (27)
 
Joined: Feb 2004
Posts: 33,701
From: Atlanta
Wow at 10psi I'd think you would be making more power also.

Pulling some fuel can help to give a little more power back.
Weren't you on a 2.5" down pipe? all the way back to the exhaust? It could be restrictive and preventing free flowing exhaust flow and allowing more power to be made.
Old Jul 14, 2008 | 07:11 AM
  #10  
kzoosho's Avatar
Thread Starter
Senior Member
iTrader: (16)
 
Joined: Feb 2007
Posts: 4,029
From: Grand rapids Mi
Originally Posted by MDeezy
Wow at 10psi I'd think you would be making more power also.

Pulling some fuel can help to give a little more power back.
Weren't you on a 2.5" down pipe? all the way back to the exhaust? It could be restrictive and preventing free flowing exhaust flow and allowing more power to be made.
I have a 2.5 inch downpipe but it goes to 3 inch right after the tranny.
Old Jul 14, 2008 | 06:40 PM
  #11  
streetzlegend's Avatar
Senior Member
iTrader: (8)
 
Joined: Dec 2003
Posts: 4,097
Like i had mentioned i think the 2.5" part of your downpipe is hurting you a bit. you said you cant run a 3" downpipe, can you fit a cutout in there somewhere? as close to turbo as possible.
Old Jul 14, 2008 | 06:57 PM
  #12  
95BLKMAX's Avatar
Senior Member
iTrader: (10)
 
Joined: Jun 2003
Posts: 2,317
From: Miami, FL
Originally Posted by streetzlegend
{....}you said you cant run a 3" downpipe, can you fit a cutout in there somewhere? as close to turbo as possible.
bahahahah!!!!! The man is Wise after all!
Old Jul 14, 2008 | 08:47 PM
  #13  
kzoosho's Avatar
Thread Starter
Senior Member
iTrader: (16)
 
Joined: Feb 2007
Posts: 4,029
From: Grand rapids Mi
Originally Posted by streetzlegend
Like i had mentioned i think the 2.5" part of your downpipe is hurting you a bit. you said you cant run a 3" downpipe, can you fit a cutout in there somewhere? as close to turbo as possible.
I may try doing a 3 inch downpipe. I just have to find a 5 bolt 3 inch outlet and order a 3 inch 90 degree. Ima try then go 3 inch all the way back.
Old Jul 14, 2008 | 11:07 PM
  #14  
96blkonblkse's Avatar
Senior Member
iTrader: (18)
 
Joined: Jul 2003
Posts: 2,862
From: Vancouver
Numbers arent that bad considering the circumstances. Id definately figure out whats with the huge drop after 5500rpm. If your mevi is opened at idle, then you have something hooked up backwards. i did that once when i was first hooking it up.
Old Jul 15, 2008 | 10:11 AM
  #15  
kzoosho's Avatar
Thread Starter
Senior Member
iTrader: (16)
 
Joined: Feb 2007
Posts: 4,029
From: Grand rapids Mi
Originally Posted by 96blkonblkse
Numbers arent that bad considering the circumstances. Id definately figure out whats with the huge drop after 5500rpm. If your mevi is opened at idle, then you have something hooked up backwards. i did that once when i was first hooking it up.
Its not open at idle. But if i rev it to 5000 it opens thats what i meant. I may not have enough vacuum period . I plan to tied it open.
Old Jul 15, 2008 | 05:01 PM
  #16  
t6378tp's Avatar
Turbo 3.5
iTrader: (69)
 
Joined: Dec 2005
Posts: 7,785
From: Philly
check your vac can and lines for leaks
Old Jul 15, 2008 | 06:52 PM
  #17  
kzoosho's Avatar
Thread Starter
Senior Member
iTrader: (16)
 
Joined: Feb 2007
Posts: 4,029
From: Grand rapids Mi
Originally Posted by t6378tp
check your vac can and lines for leaks
I did that today and its all normal. If i keep from going into boost itll open and stay open. Under boost itll open and then close. I may have a bad vac canister.
Old Jul 15, 2008 | 08:25 PM
  #18  
t6378tp's Avatar
Turbo 3.5
iTrader: (69)
 
Joined: Dec 2005
Posts: 7,785
From: Philly
Originally Posted by kzoosho
I did that today and its all normal. If i keep from going into boost itll open and stay open. Under boost itll open and then close. I may have a bad vac canister.
you couldn't have done that today cause you would know if the vac can was bad or not

I would suggest getting a hand vac pump and test your vac can, soleniod and mevi arm to see if they hold psi if they do try putting clamps on your lines. the whole point of the vac can is to store the 18-22inch lb of vac your car makes at idle to operate the mevi since your car does not make as much vac under a heavy load

I had this same problem but could not confirm it till I went to the dyno and seen the mevi open at 5k then slowly close or you could just tie it open but that really does not solve your problem now does it
Old Jul 16, 2008 | 07:20 AM
  #19  
kzoosho's Avatar
Thread Starter
Senior Member
iTrader: (16)
 
Joined: Feb 2007
Posts: 4,029
From: Grand rapids Mi
Originally Posted by t6378tp
you couldn't have done that today cause you would know if the vac can was bad or not

I would suggest getting a hand vac pump and test your vac can, soleniod and mevi arm to see if they hold psi if they do try putting clamps on your lines. the whole point of the vac can is to store the 18-22inch lb of vac your car makes at idle to operate the mevi since your car does not make as much vac under a heavy load

I had this same problem but could not confirm it till I went to the dyno and seen the mevi open at 5k then slowly close or you could just tie it open but that really does not solve your problem now does it
Well what i am saying is that it does open under no load but once a load is applied it closes. So i am guessing that indicates a bad vac canister.
Old Jul 16, 2008 | 04:40 PM
  #20  
t6378tp's Avatar
Turbo 3.5
iTrader: (69)
 
Joined: Dec 2005
Posts: 7,785
From: Philly
or a leak thats why you use the proper testing equipment instead of throwing darts

you will be able to narrow down the problem in a few minutes
Old Jul 16, 2008 | 04:44 PM
  #21  
kzoosho's Avatar
Thread Starter
Senior Member
iTrader: (16)
 
Joined: Feb 2007
Posts: 4,029
From: Grand rapids Mi
Originally Posted by t6378tp
or a leak thats why you use the proper testing equipment instead of throwing darts

you will be able to narrow down the problem in a few minutes
Not throwing darts. I used a smoke machine to search for leaks and found none. I checked all hoses,ports, hell everything. Like i said, it opens under no load but doesnt work after that.
Old Jul 16, 2008 | 06:44 PM
  #22  
t6378tp's Avatar
Turbo 3.5
iTrader: (69)
 
Joined: Dec 2005
Posts: 7,785
From: Philly
Originally Posted by kzoosho
Not throwing darts. I used a smoke machine to search for leaks and found none. I checked all hoses,ports, hell everything. Like i said, it opens under no load but doesnt work after that.
so how excatly do you know it does not work under a load you can not see under the hood while your driving, please explain not trying to be a **** but I want to know

did you confirm by seeing it on the dyno or something, cause the way I confirmed mine was fixed cause I wired up a wot switch to the mevi arm with a light so I would know what the mevi was doing by whether the ight was on or off and not a butt dyno

Last edited by t6378tp; Jul 16, 2008 at 06:53 PM.
Old Jul 16, 2008 | 07:58 PM
  #23  
kzoosho's Avatar
Thread Starter
Senior Member
iTrader: (16)
 
Joined: Feb 2007
Posts: 4,029
From: Grand rapids Mi
O nah i wasnt going by the butt dyno. I took the hood off and um well i did some spirited driving. It was fun but i could see it open and slowly close. Im not taking you as being a **** either man you are just asking very valid questions.
Old Jul 17, 2008 | 07:54 PM
  #24  
t6378tp's Avatar
Turbo 3.5
iTrader: (69)
 
Joined: Dec 2005
Posts: 7,785
From: Philly
Originally Posted by kzoosho
O nah i wasnt going by the butt dyno. I took the hood off and um well i did some spirited driving. It was fun but i could see it open and slowly close. Im not taking you as being a **** either man you are just asking very valid questions.
so you were speeding on the street with no hood looking with your eye's glued on what the mevi was doing that has to be the most unsafe way of testing car that I have ever heard of

if you want I came up with something alot safer you could use to test your mevi just shoot me a pm
Old Jul 17, 2008 | 08:02 PM
  #25  
kzoosho's Avatar
Thread Starter
Senior Member
iTrader: (16)
 
Joined: Feb 2007
Posts: 4,029
From: Grand rapids Mi
Originally Posted by t6378tp
so you were speeding on the street with no hood looking with your eye's glued on what the mevi was doing that has to be the most unsafe way of testing car that I have ever heard of

if you want I came up with something alot safer you could use to test your mevi just shoot me a pm
Yea i never said it was the smartest thing but it worked lol.
Old Jul 19, 2008 | 09:26 PM
  #26  
96blkonblkse's Avatar
Senior Member
iTrader: (18)
 
Joined: Jul 2003
Posts: 2,862
From: Vancouver
Your most likely leaking vacuum slowly. I had the same problem. Turned out the nipple on my mevi actuator was bent and cracked during the shipping process. Id definately check the vacuum canister and the actuator to make sure theres no leaks.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
DJLAX152
6th Generation Maxima (2004-2008)
3
May 4, 2021 11:46 AM
boomerbrian
5th Generation Maxima (2000-2003)
6
Oct 31, 2018 10:25 AM
The Wizard
4th Generation Maxima (1995-1999)
24
Oct 1, 2015 08:47 PM
ag90fox
7th Generation Maxima (2009-2015)
6
Sep 9, 2015 12:22 PM


Thread Tools
Search this Thread

All times are GMT -7. The time now is 09:19 AM.