I take out cats and now tires break loose at 5500 rpms in second gear. Say what?
#1
I take out cats and now tires break loose at 5500 rpms in second gear. Say what?
I didn't expect any HP gains from taking out the cats, I blew out 2 sets and I was tired of replacing them.
But now I start spinning in second gear at 5500 rpms AFTER already hooking up. It seems to have this "BURST" of power it didn't have before at in the higher RPMS's. I tried it 3 more times and it happened 2 out of 3 times.
It kind of crazy to break loose tires at that rpm and gear and have to pull off the gas a little.
I am guessing the cats get more restrictive under the higher boost/rpms and that was freed up.
Now for the inspection......
But now I start spinning in second gear at 5500 rpms AFTER already hooking up. It seems to have this "BURST" of power it didn't have before at in the higher RPMS's. I tried it 3 more times and it happened 2 out of 3 times.
It kind of crazy to break loose tires at that rpm and gear and have to pull off the gas a little.
I am guessing the cats get more restrictive under the higher boost/rpms and that was freed up.
Now for the inspection......
#6
I noticed a little of the same thing right after I put on my Roush axle backs. At first I thought it was just the tires being worn. So, I rotated the fronts to the back because they had a lot more tread left. But, it did not make a difference. I think that there must be more torque now. Not much. Just enough to notice and to brake loose at high RPM's in second gear after initially hooking up.
#7
off road x-pipes typically pick up a noticeable amount of power, particularly in the higher rpms where the catalytics restrict exhaust airflow.
I installed my UPR off road x-pipe at the same time I added the CAI and Tuner, and it made a huge improvement in power... particularly in the higher rpms.
I installed my UPR off road x-pipe at the same time I added the CAI and Tuner, and it made a huge improvement in power... particularly in the higher rpms.
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