Really sick of shit like this
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Really sick of **** like this so got my ported manifold back today. before i sent it out i didnt realize they relocated the map sensor for 07 the guy i bought the extra manifold from said it was from a 2007 though the map sensor is on the neck
im pretty pissed saved up all summer to do this mod now it wont even work start making offers
im pretty pissed saved up all summer to do this mod now it wont even work start making offers
Last edited by Pauls325; Jul 22, 2009 at 04:15 PM.
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Sorry to hear about the difference but...
How does it look, did they do a good job? Maybe you may be able to sell it to someone with a 05-06 LS4 and use the money to get the proper one done. They will have more experience at doing it now.
Was the new intake off a GXP or an Impala/Monte? The reason I ask ,I was searching GM parts direct and the Imp/Mon shows a manifold 06-07-@- 170.00 us, but under the LS4 GXP it only shows an 07 -@- 119.00us. But it shows the same pricing for the 05-06 GXP intake as for the Imp/Mon.The Question arises is the GXP manifold different. They don`t show P/N`s.
How does it look, did they do a good job? Maybe you may be able to sell it to someone with a 05-06 LS4 and use the money to get the proper one done. They will have more experience at doing it now.
Was the new intake off a GXP or an Impala/Monte? The reason I ask ,I was searching GM parts direct and the Imp/Mon shows a manifold 06-07-@- 170.00 us, but under the LS4 GXP it only shows an 07 -@- 119.00us. But it shows the same pricing for the 05-06 GXP intake as for the Imp/Mon.The Question arises is the GXP manifold different. They don`t show P/N`s.
Last edited by Ill_Born_ss; Jul 22, 2009 at 04:41 PM. Reason: new info
Same map sensor, different location?
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In changing the intake GM also changed the MAP sensor here is a quote from GM.
Advanced MAP Sensor
An advanced manifold absolute pressure (MAP) sensor completes upgrades to the 5.3L LS4’s control system. The MAP sensor is a variable resistor used to monitor the difference between atmospheric and manifold pressure, which tends to increase when the engine is operating under a higher load or at wide-open throttle. The ECM uses information from the MAP sensor to adjust spark timing and fuel delivery to optimize performance and minimize emissions.
In the LS4, the sensor has been moved to a new location on the intake manifold further from the throttle body. This improves fidelity by isolating the sensor from disturbances caused by the throttle’s movement, and takes full advantage of the E67 ECM’s capabilities.
I have been trying to find a P/N for the newer MAP
Advanced MAP Sensor
An advanced manifold absolute pressure (MAP) sensor completes upgrades to the 5.3L LS4’s control system. The MAP sensor is a variable resistor used to monitor the difference between atmospheric and manifold pressure, which tends to increase when the engine is operating under a higher load or at wide-open throttle. The ECM uses information from the MAP sensor to adjust spark timing and fuel delivery to optimize performance and minimize emissions.
In the LS4, the sensor has been moved to a new location on the intake manifold further from the throttle body. This improves fidelity by isolating the sensor from disturbances caused by the throttle’s movement, and takes full advantage of the E67 ECM’s capabilities.
I have been trying to find a P/N for the newer MAP
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Is there any reason your map sensor wouldn't work, just relocated?
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Ported intake... I wonder if this would work on my '05 GXP. I have a ported TB (uninstalled) and figured I'd wait to see if anyone ended up selling a used ported intake. Will this one for sure work on an 05 GXP? Any thoughts?
Thanks,
BJ
Thanks,
BJ
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Well if you were closer (20 hr drive one way) I would be interested but with customs and duties, shipping is out of the solution. My loss.
Slomaro2 there are only two intakes available for the LS4, one like yours, mine and the ported one with the MAP sensor at the TB neck and the other with it at the relocated area. Like I stated earlier
Intake manifold, grand prix, 5.3l
2007 $200.83 $119.05
gets Paul a new intake to have ported in the USA and 320.00 for the porting job again and a little waiting.
You would not have to wait, it is pre inspected and you get to report on the performance gains, once installed.
Slomaro2 there are only two intakes available for the LS4, one like yours, mine and the ported one with the MAP sensor at the TB neck and the other with it at the relocated area. Like I stated earlier
Intake manifold, grand prix, 5.3l
2007 $200.83 $119.05
gets Paul a new intake to have ported in the USA and 320.00 for the porting job again and a little waiting.
You would not have to wait, it is pre inspected and you get to report on the performance gains, once installed.
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From: Minnetonka,MN or Fargo
because the stealership will notice and that for sure would void warrenty work.. plus i think the new Map sensor is different due to the location it sounded like the MAP readings in the 05 position were affected due to throttle body movement and so a less sensitive sensor was used
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The first series of MAP sensors were for the E40 computer system and the later Advanced Map sensors are for the E67 computer system. By putting the faster sensor in the TB neck it would make the MAP sensor unstable and therefor problems will arise or amplify the reason GM changed it to start with.
