I have an 05/AT G Coupe. The car only has a new panel filter, and the rest is stock. I have to say the Spacer gives very little SOTP gain. It was an easy install, but it doesn't really change the sound or add really noticeable ooomph in power.

Hmmm, perhaps a CAI would wake it all up?

you are the ONLY person that has ever said that

x2

Have you reset the ECM?

Perform a reset and take it for a drive.

These spacers make a substantial difference.

PS, a CAI wont do **** but waste your money and make your engine sound like it's really doing something. When it's really just making noise.


Here is a recent link similiar question was asked.
https://g35driver.com/forums/5145311-post5.html

follow the link on that post and gain some wisdom

you must not have reset, or else you are expecting way too much out of bolt ons. good luck with cai, you will most likely go a bit slower except for at top end

I have to aggree with the OP. I added a 5/16 spacer before and "felt" no difference. But I have a Passport G-meter and there was clear increase in 0-60 and Hp. You just cant "feel" the difference. But gains are def there.

When I put on my MREV2 (gains are similar to 5/16" spacer in rev-ups until 5.5k or so) I could feel a slight but noticeable increase in power. The deeper engine sound is great though, even better when I had the spacer on, but I had to take that off!

U guys do know in order to get the best out of bolt ons you must TUNE the car also... and really don't expect it to be night/day difference with a simple 5/16 spacer... cmon bro

You need your mrev2 man!

Lol...

I will try the Pedal-ECU reset option. Not expecting night and day at all here. Just a nice pickup. Will reset and see how the SOTP feels. Say, on the G does the battery disconnect reset the PCM/ECU the same as the Pedal Reset?????


(Not expecting 400HP like the GTO, or 600 like my TT Mustang - gentlemen, I am aware of gains potential from mods! - For those calling BS - <a href="http://videos.streetfire.net/video/an-afternoon-with-the-stang_680112.htm"><img src="http://px5.sfstatic.com/thumbs/0000/10/21/680112_03.jpg"/><br>An afternoon with the Stang</a> )

Dont expect more than 10whp

Lol...

I will try the Pedal-ECU reset option. Not expecting night and day at all here. Just a nice pickup. Will reset and see how the SOTP feels. Say, on the G does the battery disconnect reset the PCM/ECU the same as the Pedal Reset?????


(Not expecting 400HP like the GTO, or 600 like my TT Mustang - gentlemen, I am aware of gains potential from mods! - For those calling BS - http://www.streetfire.net/video/an-afternoon-with-the-stang_680112.htm )

The spacer doesn't do much on the Rev-up engines due to the lower plenum. If you wanna see any real gains on the rev-ups, go with the mrev2 plenum and spacer.

^ The OP has an auto. So the Mrev2 wouldnt do much for him.

Crap, ThickG is right...

MREV2 is definetly needed to make that o_O difference. The Mrev2 does hinder performance after 6,500RPM slightly but overall you will have a better powerband.