ISF Headers

The PPE ISF Headers make a significant increase in flow compared to the stock manifolds. Tube lengths and diameters are increased coming together into a ported 4-1 parallel merge collector. Completely TIG welded construction with thick 16 gauge tubing for long lasting power gains.

Optional high-flow stainless steel ECT cats are an option. They get welded into your stock or aftermarket midpipe.

The headers with no cats show a 38-46whp gain

The headers with high-flow cats show a 28-33whp gain

The headers include new Lexus 60mm outlet gaskets and a dipstick relocation bracket. *A modified factory dipstick tube is supplied.

The headers are offered with the standard JetHot Extreme coating or a Black Extreme coating.

Header Features:

• 3/8" thick head and outlet flanges
• Mandrel bent 16 gauge tubing
• 15 degree parallel merge collectors
• Runners are welded with Silicabronze at the head flange
• Porting at flanges
• Flat sanded head flanges
• Includes larger factory style gaskets
• Includes a modified factory dipstick tube and bracket
• Includes electronic O2 conditioner
• Install instructions
• 1yr warranty

ECT Catalytic converters are EPA and OBD2 compliant.

FOR OFF ROAD USE ONLY

Dyno run 1:

Performed on the DynoJet dyno at Arizona Dyno Chip in Chandler, AZ

Before:
Takita intake, custom dual exhaust with stock mufflers and glass packs

After:
Takita intake, custom dual exhaust, PPE Headers, 4" 200CPI cats

Gains: 28-33whp with cats

Dyno run 2:

Performed on the DynoJet dyno at Arizona Dyno Chip in Chandler, AZ

Before:
JoeZ intake, everything else stock

After:
JoeZ intake, PPE Headers

Gains: 38-46whp no cats

Sound Clip

Modifications:
PPE IS-F headers
JoeZ exhaust
Random Technologies cats

Sound Clip

Modifications:
PPE IS-F headers
Custom exhaust
PPE/Magnaflow cats