how much HP could I be losing?

[TOM90LX]

Recently I installed a 2.5" dynomax cat back and because I have a GlobalWest Traklink torque arm, there's an aluminum plate that gets in the way of the flowtubes leading to the mufflers. I went to a meineke for help installing the catback system and they had to custom bend a new flow tube to go from the h-pipe to the muffler on the driver's side. They used a 2 1/4" pipe and they crimped it like crazy!! They said they had no way to bend a 2 1/2" pipe and they couldn't do mandrel bends either in the shop.. so now there's a bottle neck about 1.5" instead of nice flowing 2.5" on one side. Is this going to hurt performance? Should I go somewhere else to get it fixed right or is it not worth it??

Tom


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90 LX 5.0 Convert.
moroso cold air ,73 mm MAF, 65 mm FMS TB, Cobra intake, adj fuel pres reg. 24# inj, 155lph fuel pump, accel supercoil, electric fan, 180 deg balanced theromstat, 3 row HD radiator, march underdrive pulleys, GT40X heads, 1.7 Roller Rockers, Mac 1 5/8 shorty headers, hi-flow 2.25" cats, dynomax superturbo 2.5" cat back, g-brace, strut tower brace, Global West TBF-1 lower control arms, caster/camber plates, steeda rear adj swaybar, GlobalWest Traclink torque arm, SVO 73mm ca