pre-dyno before cams and utec
04-14-2009, 10:59 AM
#1
i SeE what you did therE
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pre-dyno before cams and utec
2005 Altima SE-R automaGic!
intake/spacers/block off plate/UDP/Ypipe/catback
i am running lean 16:1 i think he said.. need to check for leaks.....
this is the "pre" dyno before the cams and utec install.....
223 HP with 229 torque
intake/spacers/block off plate/UDP/Ypipe/catback
i am running lean 16:1 i think he said.. need to check for leaks.....
this is the "pre" dyno before the cams and utec install.....
223 HP with 229 torque
04-14-2009, 11:18 AM
#2
I don't see a link to runfiles? No way are you that lean...My guess would be you have your main cat still installed? That would cause the 'lean' condition.
Considering your electronic set-up (UTEC), IMO, why not go ahead and get a wideband installed pre-maincat (no pun indented). And I'm not too familiar with the Y for the SE-R's, but is there a possibility that there are still some form of pre cat still there? Speaking of which, what's the reason for not getting you know ... headers?
Considering your electronic set-up (UTEC), IMO, why not go ahead and get a wideband installed pre-maincat (no pun indented). And I'm not too familiar with the Y for the SE-R's, but is there a possibility that there are still some form of pre cat still there? Speaking of which, what's the reason for not getting you know ... headers?
Last edited by NmexMAX; 04-14-2009 at 11:22 AM.
04-14-2009, 11:27 AM
#4
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I don't see a link to runfiles? No way are you that lean...My guess would be you have your main cat still installed? That would cause the 'lean' condition.
Considering your electronic set-up (UTEC), IMO, why not go ahead and get a wideband installed pre-maincat (no pun indented). And I'm not too familiar with the Y for the SE-R's, but is there a possibility that there are still some form of pre cat still there? Speaking of which, what's the reason for not getting you know ... headers?
Considering your electronic set-up (UTEC), IMO, why not go ahead and get a wideband installed pre-maincat (no pun indented). And I'm not too familiar with the Y for the SE-R's, but is there a possibility that there are still some form of pre cat still there? Speaking of which, what's the reason for not getting you know ... headers?
getting tuned with the utec will help alot after the cam install.....
as for headers, the altima has an issue... teh CEL that no one can fix yet...
not to mention the shi ity sound........
04-14-2009, 01:46 PM
#5
the 05 altimas have a OEM wideband.. hmm...... i might have to look into the pre-cat wideband...
getting tuned with the utec will help alot after the cam install.....
as for headers, the altima has an issue... teh CEL that no one can fix yet...
not to mention the shi ity sound........
getting tuned with the utec will help alot after the cam install.....
as for headers, the altima has an issue... teh CEL that no one can fix yet...
not to mention the shi ity sound........
I've heard vaguely about the O2 sensor problem, but IMO, it doesn't affect performance and, well....has anyone really looked into it?
04-14-2009, 03:49 PM
#6
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well, i do have a utec turner wideband i was getting ready to sell..... hmm..
http://www.turboxs.com/more_info.php?ID=179
http://www.turboxs.com/more_info.php?ID=179
04-14-2009, 05:59 PM
#7
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04-15-2009, 07:51 AM
#10
Nice run Jeffatronic Harmonic Balancer!
Not a fan of how TQ really plumets 5k+ but with some A/F corrections that can help the curve out. Maybe the NWP VIAS delete could help your top of. Or could be gearing?
My guess now that I think about it is Nissan is trying to discourage you from running it out that far and have made their alterations to that end of the band to encourage you to not take it out that high.
I want to see some A/F logging no cats...or no cats affecting the reading I should say.
+1
Seriously! they are on a dyno and the car is strapped down... Run it all the way out!!
Not a fan of how TQ really plumets 5k+ but with some A/F corrections that can help the curve out. Maybe the NWP VIAS delete could help your top of. Or could be gearing?
My guess now that I think about it is Nissan is trying to discourage you from running it out that far and have made their alterations to that end of the band to encourage you to not take it out that high.
I want to see some A/F logging no cats...or no cats affecting the reading I should say.
Seriously! they are on a dyno and the car is strapped down... Run it all the way out!!
04-15-2009, 08:34 AM
#11
Ya, you know me, I say fuel cut every time. 
I told you to let me know so i could give you some "notes".. this will play a huge role in displaying the difference the cams actually play, since well, the cams we buy these days aren't really mean for much under 6K. 
I see we still have this nonsense here.
I told you to let me know so i could give you some "notes".. this will play a huge role in displaying the difference the cams actually play, since well, the cams we buy these days aren't really mean for much under 6K. I see we still have this nonsense here.
Last edited by NmexMAX; 04-15-2009 at 08:39 AM.
04-15-2009, 08:39 AM
#13
Ya, decided to get back on... Over the summer I plan to make a comeback 
Decided to go back for a few classes...helps get better raises.
Interesting....I'll have to dig a little into this via FSM when I have time to see 
is really up. I know my O2 set-up is different than those in your L31/A34's, but, FYI, my Secondary O2 sensor is plugged into my primary port, and mine runs fine, albeit w/ an SES, which seems to be the issue here (inspection / emissions, etc)
It's in my latest dyno post.
Here’s comparing AFR w/ and without a test pipe. Lean graph = w/o test pipe & functioning main cat. the richer version is without a cat (test pipe)
Decided to go back for a few classes...helps get better raises. is really up. I know my O2 set-up is different than those in your L31/A34's, but, FYI, my Secondary O2 sensor is plugged into my primary port, and mine runs fine, albeit w/ an SES, which seems to be the issue here (inspection / emissions, etc)Here’s comparing AFR w/ and without a test pipe. Lean graph = w/o test pipe & functioning main cat. the richer version is without a cat (test pipe)
Last edited by NmexMAX; 04-15-2009 at 08:44 AM.
04-20-2009, 10:52 AM
#17
wow. there is a huge difference between readings with a a cat and without. Would make tuning extremely difficult if they cant get a proper reading.
04-24-2009, 11:08 PM
#18
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