Performance will increase through the next 1000 miles or so. Did you
have the dealer install the headers or did you do it yourself?
Dave
'97 Dakota Sport CC V8/5-spd 4x4
K&N FIPK clone
Gibson dual cat-back
http://members.xoom.com/tnadoman
>Jim Miller writes;
>I am still not satisfied with the way my new truck runs. It is a 98
reg cab swb 5.2L auto, 3.92 sg Mopar headers but stock exhaust behind
it with 400 miles on it. Today I put the Mopar FABM on it and tried a
couple of 0-60 runs. I was quite
>dissapointed. The truck actually seems to loose power with the FABM on
it compaired to the factory air cleaner and filter with a fresh air duct
opening beside the radiator in the grille area. Here are the results.
>With FABM 0-60 first try 9.98 seconds no power braking. second try
10.03 seconds.
>With stock air cleaner and filter with fresh air duct 7.99 seconds and
8.01 seconds.
>Outside air temp 102 degrees and 39% humidity and 600 feet above sea
level elevation.
>There is minimal wheel spin with stock air cleaner and no wheel spin
with FABM.
>Also with fabm the engine almost quits pulling totally about 4800 rpm,
with stock filter it quits about 5k.
>I seem to loose a lot of torque with the open filter and gain no top
end either.
>Could my problem be putting headers on with the stock exhaust is a very
bad combination?
>I am waiting for a catback system I ordered but the dealer installed
the headers when I bought the truck. Am I expecting too much from a
318? My 89 Shelby Dak ran better than this truck does.
>That truck would smoke the tires 50 feet but had no high rpm
performance. Of course I know it was only 175 hp but was a little
lighter than the 98. I still believe the 98 should have more hp per
pound. where am I going wrong. Can I put a K&N
>filter in the stock box and help myself. The underhood temp is just
too hot in Texas summer for underhood air input.
>BTW I am running 87 octain gas, no ping at all and it cost 90.9. 93
octain is 100.9 here.
>Jim Miller
>Waco,Tx
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