mopar1rules
Active member
I have hauck husher triple pipes on my 02 viper, and put in the recommended jetting, which was:
147.5 pto, 147.5 center, 150 mag
stock needles (clip postition 3 w/both shims underneath)
stock pilots (45)
fuel screws 2-1/2 turns out (stock turns 1-7/8 )
Well, when you give it gas it will climb up to 4000 and then really go. Almost like it had to clean itself out or something. You'll rev it up fine and when you let off of the gas the rpms won't drop down below 4000. The rpm's hang there like the low end is lean. You have to flip the choke to get the rpms down to 1800. The rpms will stay there until you give it some gas again. I thought I would fix this hanging idle with 47.5 pilots and fuel screws back to 1-7/8 (because of the bigger pilots), but then it will run piss poor under 4000, then once it hits 4000 it will rip, and then you will let off and once the rpms hit 4000, the rpms fall quickly and it dies. You can keep it running with the choke on 3/4 of the way. That don't make sense. If it will idle with the choke on, then that would mean it is lean...right? Why would it be leaner with the 47.5 pilots? None of the jets are plugged. Cleaned them with brake cleaner and air compressor. You hold them all up to the light and they all allow the same amount of light through. These 47.5 pilots that I installed where out of a 98 600 srx, but that shouldn't matter, because I believe that the pilots are the same. I also played with the idle screw with both pilots in, but no change. What's wrong with this thing?
147.5 pto, 147.5 center, 150 mag
stock needles (clip postition 3 w/both shims underneath)
stock pilots (45)
fuel screws 2-1/2 turns out (stock turns 1-7/8 )
Well, when you give it gas it will climb up to 4000 and then really go. Almost like it had to clean itself out or something. You'll rev it up fine and when you let off of the gas the rpms won't drop down below 4000. The rpm's hang there like the low end is lean. You have to flip the choke to get the rpms down to 1800. The rpms will stay there until you give it some gas again. I thought I would fix this hanging idle with 47.5 pilots and fuel screws back to 1-7/8 (because of the bigger pilots), but then it will run piss poor under 4000, then once it hits 4000 it will rip, and then you will let off and once the rpms hit 4000, the rpms fall quickly and it dies. You can keep it running with the choke on 3/4 of the way. That don't make sense. If it will idle with the choke on, then that would mean it is lean...right? Why would it be leaner with the 47.5 pilots? None of the jets are plugged. Cleaned them with brake cleaner and air compressor. You hold them all up to the light and they all allow the same amount of light through. These 47.5 pilots that I installed where out of a 98 600 srx, but that shouldn't matter, because I believe that the pilots are the same. I also played with the idle screw with both pilots in, but no change. What's wrong with this thing?
redsnake3
New member
to be running that size mains with pipes you MUST have the carb vent unhooked from the airbox. i had the same problem but got rid of it by turning out the fuel screw. but im still only at about 2 1/4 i think.
mopar1rules
Active member
I do have the carbs unhooked from the airbox. Should I maybe go out another 1/2 turn on the fuel screw to make it a total of 3 turns out? I still don't understand why the 47.5 pilots work terrible? You would think that it would fix the high idle and make it run correctly with giving it just a tad bit more fuel to get rid of the hanging idle. Its annoying to have to flip the choke at every stop.
First off i hope these are the Aaen pies and not the CPR ones.
simply put the fuel screws around 1-1/8th turn out with the 47.5 pilot jets then, your just out too far on the fuel screws most likely.
simply put the fuel screws around 1-1/8th turn out with the 47.5 pilot jets then, your just out too far on the fuel screws most likely.
mopar1rules
Active member
yes, these are the aaen made pipes for hauck. So, I should try the 47.5 pilots, but only 1-1/8 turn on the fuel screws?