ECU reset on 06+

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Aug 16, 2014 | 10:24 PM

#11

ArmyAliBaba

Thread Starter

Registered User

Joined: Mar 2014

Posts: 164

Likes: 2

From: Rio Rancho NM

Quote:

Originally Posted by 1nate7

You should get Flashpro and a proper tune if you really want to take advantage of the test pipe. It will allow you to lower VTEC and pick up a good amount of mid range HP/TQ. Gernby has done quite a few Flashpro e-tunes which is probably your best option.

Working on that flashpro purchase. It's actually next on the list. What do you mean by e-tune? A tune without a Dyno?

Aug 17, 2014 | 10:07 AM

#12

rossco

Registered User

Joined: Dec 2008

Posts: 465

Likes: 6

From: oahu, hawaii

Do what is called battery reset procedure. Disconnect both positive and negative battery cables and with them disconnected jump with jumper wire positive to negative. Then turn key to 2 position. This erases all memory in ecu and restarts from factory. Leave like this for 10 min. Then turn ignition off. Now reconnect battery cables. After procedure need to do "idle learn" let car fully warm up till fans come on, then let idle for 10 minutes no loads. Do not touch throttle. Thats it!

This is a normal dealer/manufacturer procedure.

Aug 21, 2014 | 05:16 AM

#13

mattstryfe

Joined: Mar 2006

Posts: 251

Likes: 2

Quote:

Originally Posted by ArmyAliBaba

Quote:

Originally Posted by s2k4life_az' timestamp='1404157351' post='23224391

Quote:

Originally Posted by Gernby

Performance will suffer if you use a larger diameter test pipe than your exhaust. If you have the stock exhaust (60 mm), then use a 60 mm test pipe.

Significant difference?

I'm also curious. Is it a large difference? I still have the 60mm on the rack willing to swap back. I currently have the 70mm on now.

It's very difficult to measure the difference (without a dyno) but scientifically speaking, there is definitely a drawback in using a larger test pipe in this case. Creating any bottleneck in the system creates a host of negative reactions to occur. Whether the drawback is turbulence, a decrease in exhaust gas velocity, or it's effect on scavenging; it's all bad. A smooth transition from larger to smaller (Gernby's design I think) has shown very good results.

Aug 21, 2014 | 06:44 AM

#14

ArmyAliBaba

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Registered User

Joined: Mar 2014

Posts: 164

Likes: 2

From: Rio Rancho NM

Quote:

Originally Posted by mattstryfe

Quote:

Originally Posted by ArmyAliBaba' timestamp='1408256574' post='23290108

[quote name='s2k4life_az' timestamp='1404157351' post='23224391']

Quote:

Originally Posted by Gernby

Performance will suffer if you use a larger diameter test pipe than your exhaust. If you have the stock exhaust (60 mm), then use a 60 mm test pipe.

Significant difference?

I'm also curious. Is it a large difference? I still have the 60mm on the rack willing to swap back. I currently have the 70mm on now.

A smooth transition from larger to smaller (Gernby's design I think) has shown very good results.
[/quote]

As in a 70mm header -> 70mm tp -> 63mm exhaust?

Aug 21, 2014 | 08:18 AM

#15

Gernby

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Joined: Mar 2002

Posts: 15,526

Likes: 19

Quote:

Originally Posted by ArmyAliBaba

As in a 70mm header -> 70mm tp -> 63mm exhaust?

The header collector should NOT be 70 mm for an NA setup. Anything bigger than 2.5" just wastes the scavenging energy that can be generated further down stream. The best performance comes from maintaining the diameter at 2.5" for a few feet, then expanding out. Basically, like the system in my signature.