JBS Auto Designs
Whitting Valley Road
Chesterfield Derbyshire
S41 9EY
Opening Hours
09:00-17:30 Mon To Sat
1.8T 20v IHI Top Mount
JBS IHI Equal Length Upgrade Stage 1-3
The JBS IHI Equal Length Kit is our cutting-edge turbo upgrade for your 1.8 20 VT. We at JBS have worked long and hard to bring you the finest 1.8T upgrade available. All our kits are made with the best materials and engineering available, from the exhaust manifold to the hose clamps. The JBS IHI Equal Length Kit is offered in 3 stages from 300-500 Bhp .
Our IHI Equal Length Kit consists of the following components:
- JBS Tubular Exhaust Manifold
- IHI Turbocharger
- JBS Downpipe
- JBS De-CAT/High Flow Catalytic Converter
- JBS Custom boost hoses
- All Associate Plumbing and Hardware
The most important part of the IHI Equal Length Kit is the exhaust manifold. JBS has spent enormous time and resources developing the turbo manifold. The exhaust manifold has been designed in the best CAD packages availiable, for 3-D modeling and CFD analysis. By performing a computational fluid dynamics analysis, we were able to study exhaust flow, pressure drops, and fluid flow through the exhaust manifold. Multiple computer simulations were done to prove the design before we even had a physical manifold in our hand.
Once the manifold was fully passed on the computer we had the exhaust manifold CAD file transferred to a SLS rapid prototyping machine. A nylon resin exhaust manifold was cast from the prototyping machine. With this plastic manifold we were able to mock everything up in the test vehicle before proceeding to the next process.
Benefits of the equal length manifold are:
- Better Pulse Distribution
- Quicker Spool Times
- Sustained Top End Performance
- EGT's Dramatically Cut
Design features include:
- Fabricated from 321 and 409 Grade stainless steel
- Inside diameter 34mm for better overall power band
- Precision TIG welded for maximum strength and liveability
- Cutting and separating the head flange insure unbreakable construction
- The laser cut head flange are machined ensures sealed surfaces
- CNC cut collector to ensure accuracy
- JBS equal length manifold allows use of a 3.0" Down-pipe for maximum performance.
- Our collector is welded inside and out which further prevents cracks.






