TEST 1 – COBB ACCESSPORT & COBB BOOST PILL

Dyno of the tune for the EVO X

The COBB Boost Pill restricts the vacuum flow to the wastegate actuator, allowing the system to develop higher boost pressures. The COBB AccessPORT was used to fine-tune the ECU tables for the increase in boost pressure.


TEST 2 – COSWORTH INTAKE

Dyno after Cosworth intake installed

The COBB Boost Pill restricts the vacuum flow to the wastegate actuator, allowing the system to develop higher boost pressures. The COBB AccessPORT was used to fine-tune the ECU tables for the increase in boost pressure.


TEST 3 – TOMEI POWERED EXPREME TI EXHAUST

Dyno after Tomei Exhaust installedThe COBB Boost Pill restricts the vacuum flow to the wastegate actuator, allowing the system to develop higher boost pressures. The COBB AccessPORT was used to fine-tune the ECU tables for the increase in boost pressure.

 

 

 


TEST 4 – TOMEI POWERED TITANIUM CAT STRAIGHT PIPE

Dyno after Tomei straight pipe installed on EVO XThe COBB Boost Pill restricts the vacuum flow to the wastegate actuator, allowing the system to develop higher boost pressures. The COBB AccessPORT was used to fine-tune the ECU tables for the increase in boost pressure.


The Bottom Line

HP Level HP Increase % Increase Total
BASELINE 264
COBB AP + Boost Pill 300 36 13.6% 36
Cosworth Intake 309 9 3.0% 45
TOMEI POWERED Expreme Ti Exhaust 328 19 6.1% 64
TOMEI POWERED Titanium Straight Pipe 335 7 2.1% 71
FINAL POWER 335 24.8% 71

PARTS LIST (DOES NOT INCLUDE DYNO TUNING)

COBB AccessPORT $ 595.00
COBB Boost Pill $ 18.00
Cosworth Intake $ 339.00
TOMEI POWERED Expreme Ti Exhaust $ 1,290.00
TOMEI POWERED Titanium Straight Pipe $ 390.00
MSRP Total $ 2,632.00
DSPORT Street Price: $ 2,106 – $ 2,237

BASICS HANDLED

With the tuning solution in place, the maximum boost level that the factory bypass valve was determined to be able to hold was approximately 27 psi. Further quests for reliable and consistent horsepower gains above these levels should require at least the replacement of the factory bypass valve to allow higher boost pressures to be reached without the factory valve bleeding off excess pressure. With the basic intake and exhaust system components in place and tuned for maximum power output, our 71 whp increase and additional 45 lb-ft of torque should definitely motivate our EVO to faster levels. A side benefit of the titanium components is a respectable weight savings that reduce the load on the engine, allowing it to perform more efficiently than the horsepower and torque numbers alone would suggest.Final results dyno of our EVO X test and tune

In our next installment, we look toward further increasing intake efficiency by addressing the charge air temperatures and boost pressure losses that might occur with the factory rubber intercooler hoses and the factory boost bypass valve. We will also continue to maximize power output potential of each product by fine-tuning our fuel and ignition tables with the AccessPORT unit. Stay tuned.

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