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For those with 96+ emissions, NYS inspection will be fine as long as you are running the stock computer, there are no codes and your readiness monitors are complete. I ran my 98 XJ 4.0 turbo through since 2008. I was using the Aeromotive DFMU for fuel and Crane ignition for timing retard. It...
I would love to see a conclusion to this, regardless of which forum it is in. I too have a 98 XJ 4.0 5 speed doing the same thing. When the engine is cold the stumble will occur under any type of acceleration around 2-3K rpm. This happens once per drive and then gone. The problem is no check...
I read about this regarding STS systems. They showed a toyota truck flogging it in and out of water proving that it won't be a problem. If it does ever happen I would be amazed! I imagine the turbo would have to be glowing hot and then be completely submerged for a period of time. I don't...
about the scanner, I thought of the same thing after I posted! Plugs are NGK and the electrode is shorter and 1 stage colder. Gap is set at 28. I used plugs that a boosted viper would run, as we use the same stock plug!
I am new to tuning and understand that running richer when FI isn't a...
Timing is stock, I adjust the knob on the crane unit until the knock goes away. With that device how would you find that answer? I do not have a knock detector other than my ears.
As for wire looming, I will do that as soon as the tape will stick again. It is only 20-30 degrees right now...
Hi guys,
Just wanted to share a project I did during october. The XJ is a 98 4.0 5 speed. Specs of the main parts are:
Aeromotive DFMU with E150 frame mount fuel pump
Crane HI-6 ignition with 2 bar map and timing control
(free) ebay m12 turbo T3/t4 .63, custom 90 degree outlet
(free) ebay...
CSaddict,
You may want to try closing your spark plug gap to .025-.028. Spark blow out could also be causing your boost creep. If you already have, then your new external wastegate will fix your problem. Just a thought.
Brad
PapaPump,
Long story short...too much nitrous, fuel system could not keep up. The 255lph intank couldn't maintain the pressure and things got a little hot.
If the truck 5.0 intake would fit under the hood of an XJ, that would help with some low end torque, also it faces the driver side like...
Hi,
I own 2 Thunderbirds, so I had to step in with some facts...
Ford produced the T-Bird with a 5.0 HO from 91-93 only, and also in the Mercury Cougar of the same years. The Fox Body T-birds (88 and older) never got the HO. The MarkVII did. The upper intake from the TBird HO is the same...