would a loose EGR nut cause my truck to run like sh*t. I looked over the truck last night and the nut was lose and there was are shooting out of it. I tightened it and it improved slightly ( I think, maybe I am just praying)

Here is a copy of my original post:

First off I would like to thank Sal from PSP for making the trip to Mustang Magic to dyno tune my truck this weekend.


Well my last tune was 386/486.
Since then I ported the upper intake and blower and added a 160 thermo:
Now I am at 415/486(or 489 can not remember)

So I impress with the Dyno numbers and I saw 30 hp to the wheels like everyone else with an apten is getting


So then I headed to the track. Last time I ran a 12.8 @106 at Etown. This was with the ported intake and blower but no dyno tune and no 160 thermo.

Sunday I ran a 12.54 @ 106 at Etown. The track conditions where real close so I guess the tune, thermo, and porting shaved .25 off my E.T.

I had to run Heavy class so I only had 2 runs. On my second I broke something. 3/4 down the track the truck just stopped accelerating and my mph was only 97 mph. I get back to the pits and my truck is running like crap, very ruff, felt like the truck was shaking. Then I look under the car and there is a small amount of oil slowly dripping from between the oil pan and the tranny

Any ideas.