Engine/Transmission (1994 - 1998) California 12V difference?

[TLEarl]

I have been looking into adding a fuel plate to my 12V, automatic transmission, and came across something that has me wondering. I saw on one of the websites that refer to the 96-98 EGR engine and can't be upgraded. I haven't had a chance to check any serial numbers on my diesel to see if it is an EGR engine yet. Is there a way to tell without checking the numbers? For instance the previous owner removed a component that ran from the intake to the exhaust header and just put plates over the holes. I am new to diesels and not sure what this was, he said it was CA emissions related...



If it is an EGR engine I believe I can go up to a #10 plate without any problems. I am looking to bump up the power to pull my camper a little easier. Any ideas?



Thanks in advance!

 

[Vaughn MacKenzie]

Yeah he essentially solved your EGR limitation so you can BOMB away. Upgrades were not advertised for EGR engines due to the obvious problem of pumping more soot into the intake, but with that removed you're not going to do harm by bumping the power up.

 

[TLEarl]

Awesome Vaughn, thanks. On a side note, you still running wvo blend? I read all of CJ's post. Really cool stuff.

 

[ScottLewis]

As an FYI, the original intake on the EGR engine has a serious flow restriction. A first step toward power improvement should be replacement with a "49 state" or aftermarket intake.

 

[TLEarl]

Danavilla,

I was thinking of adding a AFE bladerunner when I install the plate. I was wonder about how much of a flow restriction that original would have, especially with the additional port in it. Same goes with the exhaust manifold, but that won't get changed anytime soon. Thanks!

 

[Bob4x4]

I have the Blade runner on my 94,great fit and will be the perfect replacement for your EGR manifold. Your origional has a venturi built into it to aid the egr to be induced under boost . the retriction is easy to see when you pull the manifold off flip it upside down.

 

[ScottLewis]

TLEarl;

Bob4x4 has answered your question as well as I could. The restriction is apparent when you see it. It's considerable. I kept the intake on my 98 depite blocking off the EGR because I was concerned CA would begin inspecting them. I sold it before that happened but I was correct. I never tried modding it very much anyway.

 

[TLEarl]

Thanks guys. Luckily MT doesn't have any emissions inspections so I have at it as far as mods. I wanted to get a little more pulling power out of it as I just came back from a camping trip towing a 26" camper in a headwind. Worked the rig pretty hard just to try and maintain 55mph. Thanks again.

 

[KBurgoyne]

#10 plate with aftermarket intake, and 4'' exhaust would make around 240-260 horses.

the limit for the stock Torque converter is 270 so dont floor ittoo much.

BTW i have a bladerunner intake too and i love it. looks good, smooths out the airflow, and is pre-ported for boost gauge, water injection, nitrous or all of the above.

 

[Breed]

I removed my EGR crossover tube on my 98 California Truck due to it breaking twice and causing a engine fire. I blocked off the hole and put on a new intake manifold which I got off of e bay and the truck still runs great. I did try a number 10 plate but the trucks transmission was slippin in the higher two gears on the Auto so I removed the plate. I have had the truck since it was brand new and still love the truck and it just turned 100,000 miles.

 

[JKosten]

Since you have a 97, as of now there are not any smog testing for your truck.



I have a 96 and took the egr out and replaced the intake with a Pusher of of ebay. it was around $160 and made a huge difference.



I would also recommend using the block off plate on the exhaust as a location to mount an EGT probe.



I have that intake, a 4" turbo back from silverline, #100 plate, ground afc, rack plug and torq tek overflow valve.



With all of that in the truck I run about 400 deg around town and 550-600 at 70 on the highway. Way better than the factory setup.



Here is a picture of factory vs pusher and you can see the cast restriction in the factory elbow.

 

[CumminsPuller]

If I may ask, what do you guys do with the vacuum hose connection after blocking off the EGR connections? Do you block it off aswell?



Jason

 

[Bob4x4]

pull the solenoid and vacuum harness as a unit and cap the fitting at the firewall.

 

[Bob4x4]

Since you have a 97, as of now there are not any smog testing for your truck.



I have a 96 and took the egr out and replaced the intake with a Pusher of of ebay. it was around $160 and made a huge difference.



I would also recommend using the block off plate on the exhaust as a location to mount an EGT probe.



I have that intake, a 4" turbo back from silverline, #100 plate, ground afc, rack plug and torq tek overflow valve.



With all of that in the truck I run about 400 deg around town and 550-600 at 70 on the highway. Way better than the factory setup.



Here is a picture of factory vs pusher and you can see the cast restriction in the factory elbow.

You need to recheck those Egt's

 

[JKosten]

You need to recheck those Egt's

What do you mean?



Also I asked about this on another thread a couple minutes ago.



Should I move the EGT probe from the EGR port to closer to the turbo?

 

[Bob4x4]

400 degrees around town?? you either have an egg under your pedal or I would recheck the accuracy of the gauge

 

[Bob4x4]

#10 plate with aftermarket intake, and 4'' exhaust would make around 240-260 horses.

the limit for the stock Torque converter is 270 so dont floor ittoo much.

BTW i have a bladerunner intake too and i love it. looks good, smooths out the airflow, and is pre-ported for boost gauge, water injection, nitrous or all of the above.

No,a cali 180 hp would need a #8 to make 230,a 6 would be 250,a 5 for 270

 

[JKosten]

Well that goes back to the question about my mounting location. I put it in a plate where the egr was.

Should I go back and mount it right before the turbo?

 

[JKosten]

No,a cali 180 hp would need a #8 to make 230,a 6 would be 250,a 5 for 270

What about a #100?

 

[Bob4x4]

Well that goes back to the question about my mounting location. I put it in a plate where the egr was.



Should I go back and mount it right before the turbo?

No you're good