Ok, heres the deal i recently bought 92 Ty 1104 out of Kansas and brought it back to Texas, where unlike KS it has to go for an annual safty and emmission inspection. Wel i bought it as a theft recovery so i had to replace the fuel pump, driver side window, steering colum, do some rewiring on some swithes that had been put in to comntrol the electric fans, put the air intake back on and some other small stuff.
Well the truck is basically stock with 159K miles on it, and the only thing changed on the chip is it has the EGR disabled, this is according to the previuos owner. It has the stock turbo and downpipe and where the cat woudl be it has no cat and a 3in pipe coming off the dowmpipe into a 3in flowmaster 2 chamber 40 series dumped at the outlet of the muffler and before the axle.
Sounds pretty decent,and for the milage the truck runs strong, hammer it and it pegs the boost guage dead set at 13-15 psi and maybe creeps to 16 every so often. Well in order for it to pass inspection i had to put a cat back on it, so i had a high flow dynomax cat 2.5 in and out already, so i just had the exhasut shop weld it in on the end of the stock downpipe and then to the 3in catback already on the truck. Well it made it just a tad bit quieter, but not much and al was good and it passed inspection. Well as im driving down the road, it doesnt feel as strong and i notice now im only getting 10 psi boost when i hammer it and it will try and creep to 13 if its lucky, but mostly just stays right on 10-12, and im like WTF is going on here, this isnt any good at all.
So any ideas what is causing this to happen?? Should i have gone with a 3in cat instead? Please help me figure this out.
Well the truck is basically stock with 159K miles on it, and the only thing changed on the chip is it has the EGR disabled, this is according to the previuos owner. It has the stock turbo and downpipe and where the cat woudl be it has no cat and a 3in pipe coming off the dowmpipe into a 3in flowmaster 2 chamber 40 series dumped at the outlet of the muffler and before the axle.
Sounds pretty decent,and for the milage the truck runs strong, hammer it and it pegs the boost guage dead set at 13-15 psi and maybe creeps to 16 every so often. Well in order for it to pass inspection i had to put a cat back on it, so i had a high flow dynomax cat 2.5 in and out already, so i just had the exhasut shop weld it in on the end of the stock downpipe and then to the 3in catback already on the truck. Well it made it just a tad bit quieter, but not much and al was good and it passed inspection. Well as im driving down the road, it doesnt feel as strong and i notice now im only getting 10 psi boost when i hammer it and it will try and creep to 13 if its lucky, but mostly just stays right on 10-12, and im like WTF is going on here, this isnt any good at all.
So any ideas what is causing this to happen?? Should i have gone with a 3in cat instead? Please help me figure this out.
