Custom 348 headers by Hytech by ernie

4 minute(s) of a 14 minute read

So far the heat doesn't seem to be a problem. Actually it seems that these headers cool off faster than the stock headers. Maybe because the packing and clam shell help to keep the heat from the headers trapped inside = longer to cool off. I never did a before temperature test, nor an after. I'm just going based on how the engine bay temp feels after a drive. They may be radiating more heat, but then again I'm guessing that helps them cool off faster? If I do do anything, it'll probably be ceramic coating.

2-7-2011

My exhaust system really surprised me today.

When out for another test run in my car, after having replacing the ignition modules last week. I was on the freeway behind a Ford Lightning, and there was a car in front of him driving like a turtle. So I go over two lanes and pick up a little bit of speed to get around them. Well the Lightning gets into the lane next to me and starts accelerating, as not to let me get around. So I down shift and stand on it. The guy in the Lightning stands on it. At this point I'm thinking that I will be left for dust. Those Lightnings are some fast fricking trucks, especially with a pulley change. Bone stock they put down 380 hp and 450 lb/ft of torque. But instead of getting left I was actually reeling him IN!!! I could not believe it. I was inching up on the guy, little by little. Up shift and figure now I'll get left for sure. But no I was still right with him, and STILL just barely inching up more. But then we had to slam on the breaks as a we were quickly on the rear of some cars that used to be way ahead of us. I was totally shocked that I was able to hang with a Lighting. I'm still in disbelief about it. I know this dude was standing on it hard, because not only could I hear it when he floored it, I could see all the black smoke pouring out his exhaust.

4-9-2014

Hey guys this is a really late update.

I was going through some old stuff and found before and after dyno sheets from about a year and half ago.

Thin blue line: Hytech headers, hi-flow cats, and gothspeed muffler, ported tb's & intake runners.

Thick blue/pink lines: Stock headers, stock cats, stock single can spider muffler, ported tb's & intake runners.

Peak Hp vs stock was up +12hp, 305hp vs 293hp to the hubs. The stock exhaust system made peak power at 7000 rpm. The my custom setup was already making 293hp at around 6800rpm. At 6950rpm it was putting down 300hp to the hubs, and never looked back all the way to the rev limiter at 7750rpm. Over the curve it was as much as +14hp over stock at 7400+rpm.

Peak torque was up 4.7 lb/ft over stock.
But under the curve, in the midrange, is were the Hytech headers really shine. 227 lb/ft for the Hytech tri-y's vs 214 lb/ft for the stock exhaust system in the 4780-4790 rpm range. I can definitely feel that in the seat of the pants.