My Latest Project
Fleet Mechanic
Joined: Dec 2007
Posts: 1,766
Likes: 8
From: Hutchinson, KS
Fleet Mechanic
Joined: Dec 2007
Posts: 1,766
Likes: 8
From: Hutchinson, KS
Well thank you sir!!
They're not in the way down in front and can't hardly be seen with the fuel regulator mounted in front.
Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
Thanks Roland!
Posting Guru
Joined: Feb 2004
Posts: 2,365
Likes: 0
From: IOWA
Subscribing. 
I'll be replacing my turbo with a van turbo, hopefully here soon, and these look like some good minor modifications to do.
For my own clarity, what's the purpose of moving the MAP sensor to the "turbo" side of the spider; with the presumed quicker response, the computer will react quicker with fuel??
Also, wouldn't it be more beneficial (diagnostic wise) to have the boost reading on the intake side, so if you're not seeing the boost reading you normally have, it'll give you an idea of boost leak, whereas on the side of the turbo you'll never see it????
Just my thoughts, so feel free to educate me!
I'll be replacing my turbo with a van turbo, hopefully here soon, and these look like some good minor modifications to do.
For my own clarity, what's the purpose of moving the MAP sensor to the "turbo" side of the spider; with the presumed quicker response, the computer will react quicker with fuel??
Also, wouldn't it be more beneficial (diagnostic wise) to have the boost reading on the intake side, so if you're not seeing the boost reading you normally have, it'll give you an idea of boost leak, whereas on the side of the turbo you'll never see it????
Just my thoughts, so feel free to educate me!
Thread Starter
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Lead Driver
Joined: Jun 2003
Posts: 8,298
Likes: 25
From: Damon (South East Texas)
Subscribing.
I'll be replacing my turbo with a van turbo, hopefully here soon, and these look like some good minor modifications to do.
For my own clarity, what's the purpose of moving the MAP sensor to the "turbo" side of the spider; with the presumed quicker response, the computer will react quicker with fuel??
Also, wouldn't it be more beneficial (diagnostic wise) to have the boost reading on the intake side, so if you're not seeing the boost reading you normally have, it'll give you an idea of boost leak, whereas on the side of the turbo you'll never see it????
Just my thoughts, so feel free to educate me!
I'll be replacing my turbo with a van turbo, hopefully here soon, and these look like some good minor modifications to do.
For my own clarity, what's the purpose of moving the MAP sensor to the "turbo" side of the spider; with the presumed quicker response, the computer will react quicker with fuel??
Also, wouldn't it be more beneficial (diagnostic wise) to have the boost reading on the intake side, so if you're not seeing the boost reading you normally have, it'll give you an idea of boost leak, whereas on the side of the turbo you'll never see it????
Just my thoughts, so feel free to educate me!
I have my boost line connected on the "cold side" in the AIH delete plug, so I will still be reading "gauge" boost near the end of its tract.
Thread Starter
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Lead Driver
Joined: Jun 2003
Posts: 8,298
Likes: 25
From: Damon (South East Texas)
I used 2" aluminum angle. Mounted it to 2 of the 10mm bolts rather than directly above the MAP sensor. Gives the hose a better approach up and over the trans dipstick. Something similar will work. It's not the best job I've done and will someday make it a little cleaner, but it turned out pretty good.
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Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
Also, wouldn't it be more beneficial (diagnostic wise) to have the boost reading on the intake side, so if you're not seeing the boost reading you normally have, it'll give you an idea of boost leak, whereas on the side of the turbo you'll never see it????
Just my thoughts, so feel free to educate me!
Just my thoughts, so feel free to educate me!
to the bottom of spider. This will give me readings pre and post IC. Help me narrow it down. I will just leave the old boost gauge line running through the firewall.
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Lead Driver
Joined: Jun 2003
Posts: 8,298
Likes: 25
From: Damon (South East Texas)
Didn't find the parts needed for a regulator bracket this evening. Have to go to town again tomorrow to get parts for Aunt's truck rear brake job. Hopefully, I'll get them then. I want to do this up right. At least it is functional for now. I'll post my observations during the drive tomorrow.
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Lead Driver
Joined: Jun 2003
Posts: 8,298
Likes: 25
From: Damon (South East Texas)
Thanks, Robin.
I'll find out tomorrow if it was worth the time spent. I hope to see some improvement.
I'll find out tomorrow if it was worth the time spent. I hope to see some improvement.
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Lead Driver
Joined: Jun 2003
Posts: 8,298
Likes: 25
From: Damon (South East Texas)
Test Drive: My Observations
I would say that there probably won't be any difference in the boost the sensor is seeing, it's just getting it faster. Guys that run boost gauges before and after the intercooler say that they've seen a 2-5 psi drop from one side to the other. With the MAP line in the normal spot, it would just take longer to build the boost on that side of the i/c compared to right out of the turbo where it's immediate.
pretty much sums up what I am experiencing with the MAP sensor port relocation. I hooked up the AE before my test drive to try and monitor the differences in boost. Since I have my boost gauge in the "cold" side and the MAP on the "hot" side, I was looking for differences in the boost numbers. The data from the AE was a little confusing 
at first, but there did seem to be ~1-2 psi higher reading on the AE upon acceleration that quickly leveled off when the boost peaked. It's kinda hard to monitor the laptop and boost gauge at the same time. 
At some time, I need to be looking up the road. 
There is better SOTP feel and Big Red has "a little more pep in his step". 
I feel it was worth the time to do. As for the cleanup of the inside of the spider, that is something I can't really say. It kinda goes in the "can't hurt" category. I filled up the tank this evening and will see how these mods may affect my fuel economy. I'll let ya'll know how this turns out. With all the ports tapped, I can easy switch things back if I don't like what I see.Still need to mount the MAP regulator and clean up the engine bay. I got the angle for the bracket this evening. Just need to get'r done. No rest for the wicked
, but I'm taking a break for now.