I am looking at adding a pyrometer and boost gauge to my 2000 F-250 psd. Talking to the local 4x4 shop, they told me that a stock 7.3L will push close to 30 lbs. of boost, and that if I made any mods at all it would bury the gauge. He suggested a 60 lb. gauge. Is this really necessary? He also said there was only three inhes of space to mount the egt probe pre-turbo, and it would still not get an accurate reading. So he strongly recommended mounting the probe post turbo. I would appreciate any feedback on this. I am also adding the transmission temp., but don't have any of the gauges yet. I am hoping the online store will add them soon.

Thanks in advance,
Hollon

 

I really don't know how much boost you will have but in mine, the most I have seen is 26 psi. I can't imagine why you would only have 3 inches to mount the probe for the pyro. There are a lot of different thoughts on where to mount it, pre or post, but I mounted mine in the drivers side exhaust manifold. duece

 

Thanks for the reply. Is the drivers side exhaust where Isspro rcommended the probe installation, or how did you determine this?

 

hey i put my egt probe on the drivers side up pipe before the turbo.

 

I want to buy a boost gague, where is a good place to buy one at for my 99 PSD with auto trans?.....thanks

 

Were about to do this too.. just need to find a place that will do it in the Fresno area... Also are the boost and pyro guages all i need??

 

My new downpipe came with the location for the sensor. It is on the exhaust side of the turbo but I was told that using the gage and add about 100 degrees then I would have the real temps. I just started using it and found that under a hard pull the temps would range about 800 - 850. this seems to be correct from everything that I have read.
As far as the turbo boost. Mine ranges around 10 pounds under a load. Now I have the autometer guages. Does this sound about right? I havn't set up the programer yet. I'm planning on going over to Atlanta and seeing Ken and picking up the Diablo. The exhaust is the 3.5 down tube with a 4 inch exhaust and a 5 inch tip. I wasn't able to find out what the temps were stock as I didn't get the guages until after I had replaced the stock system.

 

if you put it post turbo its not always 100 degrees off it varys depending on how hard the engine is working the harder its working the more its off.

 

Safest place for it. If it comes apart for some reason, the debris will pass down the exhaust pipe and not take the turbo out with it.

That seems a bit low, double check your installation point and make sure the hose is not pinched somewhere.

 

HzrInAz hi, what year truck do you have? I was a heavy diesel mechanic for many years. Expirence tells me to mount the pyro probe pre turbo. You should have plenty of room to drill and tap a 1/8" npt hole about 2" before the end of the manifold with the donut gasket on the drivers side. Be careful to avoid having chips go into the manifold. Then take a pencil magnet and insert it into the hole to get the rest of the metal chips. As far as accuracy goes Starratt04 is correct that the harder you work the engine the greater the error margin gets between pre and post turbo temps. A 100 degree temp difference is probably true at idle, but not on a hard pull. I have seen post turbo temps vary as much as 400- 500 degrees from what the pre turbo temps were! In fact my near stock 96 PSD has no problem hitting 1100 deg. pre turbo on a "medium" pull and it only has a 3.5" down pipe + 4" the rest of the way back, & a tymar intake, stock program,no chip, no propaine, no intercooler. Excessive boost will set off the service engine soon (ses) light at about 25-28 lbs. of boost. In stock form you should not have any boost greater then 25-28lbs. If you plan on doing any mods like a high H/P chip then a 60# gauge would be a good idea. I would like mention that the A-pillar 3 gague pod does cause a bit of a vision inparement.

 

thanks guys. I have been keeping an eye on it. When I was looking at the installation the company that I was dealing with would not touch the trubo on the intake side, seems like that had a bad experience with it in the past. I do understand that the temps may be a little off. I'll have to keep an eye on it for a while. I was having a problem with the guage for a while but I think that its working right now. I guess one thing that seems to make sense is the fluaction of the temps. thanks, I'll let you know as the process continues. It never really ends. Again Thanks

 

I have a 2000 F-250. It is completely stock except for a K&N filter in the factory intake. I will at some point probably add a programmer and modify the exhaust, but am starting with the gauges. Thanks for your help.

 

I'm also interested in installing gauges. Does anyone know of a link for step by step instructions on how to install them? I'd kinda like to know how much work I'm getting into before I decide whether or not it's a DIY project.

 

It took me about 1-1.5 hours per gauge. I am a novice mechanic at best, but found this project to be not so bad. I mounted them in the A-pillar and I really like the system and how it looks. The shop wanted about $100 per gauge to install. So I saved myself $300 bucks!

 

I have literally just received my ISSPRO Pryo gauge and a couple of others to populate my "A" pillar mount.

I have spent over a year on this website and I have decided I am going with a pre-turbo installation. I have never heard of the tip breaking off or some other calamity and getting sucked into the turbo.

I tow a 8,500 trailer in the mountains of San Diego County and I want to know what the EGT's are as they're coming off the exhaust manifold. I've heard that 1,250 degrees is deadly to the turbo as the fins start to melt.

Just my two cents. Go pre-turbo and I got my ISSPRO gauges at Diesel Injection Service, the URL is further up this thread.

Have fun!

Steve