Invidia Gemini CBE & ERZ HFC Review (with db comparison)

bradz · 06-10-2010, 07:28 PM

when installing your ERZ hfc did you guys use the factory gasket between the cats and y-pipe?

rockhounds · 06-06-2010, 03:44 PM

this exhaust fits on my 09 nismo?

genki370z · 06-06-2010, 11:45 PM

your setup sounds awesome man!!! im gonna be brave and bite the bullet on getting the ERZ resonated testpipes to mate up with my agency power exhaust. so ill have a video of the setup as soon as i get the testpipes in. i just hope that its not crazy loud or raspy,....but eh, what can i say im kind of asking for it purchasing testpipes

Nick911sc · 06-07-2010, 01:22 PM

After seeing your video and the price tag associated with this setup I am EXTREMELY close to pulling the trigger on this setup soon. Saving money with these results are enticing!

djpathfinder · 06-07-2010, 04:15 PM

It's definitely an awesome combo!

bradz · 06-07-2010, 04:20 PM

I just bought the same combo and it should be here this week

djpathfinder · 06-10-2010, 07:43 PM

Yes.

bradz · 06-10-2010, 08:00 PM

Quote:

Originally Posted by djpathfinder

Yes.

I am just wondering because I have this vibration when I installed my ERZ hfc. It vibrates the whole catback system.

Pressing the accelerator pedal and as soon as you let off the gas the whole exhaust system vibrates. Evrything has been tightened up good.

djpathfinder · 06-10-2010, 09:10 PM

Does it vibrate all the time or intermittently? I had a vibration that was constant no matter the RPM...if you read my earlier posts from a couple of weeks ago, you'll see I found my rattle was caused by loose O2 caps. Make sure those are tightened. Do you have the stock exhaust? If so, make sure the heat shielding isn't loose or coming in contact with anything else. If the connections (flanges) are seated properly, bolts tightened and there's no exhaust leak, then they should be fine. Is any part of your exhaust contacting other parts of the car (e.g. sway bar)? Just a few ideas...hope it's an easy find and fix.

bradz · 06-10-2010, 09:22 PM

Quote:

Originally Posted by djpathfinder

Does it vibrate all the time or intermittently? I had a vibration that was constant no matter the RPM...if you read my earlier posts from a couple of weeks ago, you'll see I found my rattle was caused by loose O2 caps. Make sure those are tightened. Do you have the stock exhaust? If so, make sure the heat shielding isn't loose or coming in contact with anything else. If the connections (flanges) are seated properly, bolts tightened and there's no exhaust leak, then they should be fine. Is any part of your exhaust contacting other parts of the car (e.g. sway bar)? Just a few ideas...hope it's an easy find and fix.

it is not constant. as soon as the rpm drops down that's the time it vibrates. the whole catback system is shaking like crazy. I have Invidia Gemini installed last week and I don't have this problem at all.

ERZperformance · 06-12-2010, 08:23 PM

Quote:

Originally Posted by bradz

it is not constant. as soon as the rpm drops down that's the time it vibrates. the whole catback system is shaking like crazy. I have Invidia Gemini installed last week and I don't have this problem at all.

you should still make sure the (2)02 cap is tighten enough because I only hand tight them before I ship it , also the cel fix bung is two piece make sure the second piece is tight also because I also hand tight that only before I ship them.

only these two piece can move and screw on.

if after this don't work you might want to consider stronger exhaust hangers.

bradz · 06-13-2010, 11:20 AM

Quote:

Originally Posted by Nissangeneration

you should still make sure the (2)02 cap is tighten enough because I only hand tight them before I ship it , also the cel fix bung is two piece make sure the second piece is tight also because I also hand tight that only before I ship them.

only these two piece can move and screw on.

if after this don't work you might want to consider stronger exhaust hangers.

I am going back tomorrow to the shop to check everything out again one more time. the "cel fix bung" the o2 sensor won't fit on that extender that's why I didn't use it.

bluestyle55 · 06-14-2010, 09:46 PM

Quote:

Originally Posted by bradz

I am going back tomorrow to the shop to check everything out again one more time. the "cel fix bung" the o2 sensor won't fit on that extender that's why I didn't use it.

I didnt use those extenders either and mine was fine.

Nick911sc · 06-13-2010, 09:24 AM

So I was thinking this weekend about how people talking about this exhaust being a little more restrictive when compared to other exhausts on the market. Allowing it to be a little quieter but in return producing a little less gains.

But then it hit me.

As the first breathing part put on the car yields the most gains; then wouldn't pairing this exhaust with hfc's somewhat negate the smaller gains made by the exhaust alone?

There are dyno's on the forum showing huge gains from HFC's and then small from CBE because of the order they were put on, and then the same reversed.

So with HFC and this exhaust put on I'd assume that the restriction is moot when put up against the gains over other exhausts paired with HFC's that are said to be less restrictive.

Please correct me if my thinking is wrong.

rockhounds · 06-16-2010, 02:04 PM

this exhaust fits on my 09 nismo?

06-06-2010, 03:44 PM	#2 (permalink)
rockhounds Base Member Join Date: Apr 2010 Location: Miami/FL Posts: 67 Drives: 2009 GT-R Rep Power: 17	this exhaust fits on my 09 nismo? __________________ “Three Rules of Work: Out of clutter find simplicity; From discord find harmony; In the middle of difficulty lies opportunity.” - Einstein

06-07-2010, 04:15 PM	#5 (permalink)
djpathfinder A True Z Fanatic Join Date: Mar 2010 Location: Edmonton, Canada Posts: 12,910 Drives: 2012 GT-R BE Rep Power: 735	It's definitely an awesome combo! __________________ 2012 GT-R Black Edition Jet Black 2010 370Z 40th Anniversary // SOLD

06-10-2010, 07:43 PM	#7 (permalink)
djpathfinder A True Z Fanatic Join Date: Mar 2010 Location: Edmonton, Canada Posts: 12,910 Drives: 2012 GT-R BE Rep Power: 735	Yes. __________________ 2012 GT-R Black Edition Jet Black 2010 370Z 40th Anniversary // SOLD

06-10-2010, 09:10 PM	#9 (permalink)
djpathfinder A True Z Fanatic Join Date: Mar 2010 Location: Edmonton, Canada Posts: 12,910 Drives: 2012 GT-R BE Rep Power: 735	Does it vibrate all the time or intermittently? I had a vibration that was constant no matter the RPM...if you read my earlier posts from a couple of weeks ago, you'll see I found my rattle was caused by loose O2 caps. Make sure those are tightened. Do you have the stock exhaust? If so, make sure the heat shielding isn't loose or coming in contact with anything else. If the connections (flanges) are seated properly, bolts tightened and there's no exhaust leak, then they should be fine. Is any part of your exhaust contacting other parts of the car (e.g. sway bar)? Just a few ideas...hope it's an easy find and fix. __________________ 2012 GT-R Black Edition Jet Black 2010 370Z 40th Anniversary // SOLD

06-16-2010, 02:04 PM	#15 (permalink)
rockhounds Base Member Join Date: Apr 2010 Location: Miami/FL Posts: 67 Drives: 2009 GT-R Rep Power: 17	this exhaust fits on my 09 nismo? __________________ “Three Rules of Work: Out of clutter find simplicity; From discord find harmony; In the middle of difficulty lies opportunity.” - Einstein

06-10-2010, 07:28 PM	#1 (permalink)
bradz Enthusiast Member Join Date: Jul 2009 Location: Pinellas County Florida Posts: 348 Drives: 09' 370z MB 6spd Rep Power: 17	when installing your ERZ hfc did you guys use the factory gasket between the cats and y-pipe?

06-06-2010, 11:45 PM	#3 (permalink)
genki370z Base Member Join Date: May 2009 Location: Lemoore,California Posts: 236 Drives: 2009 370z silver 6mt Rep Power: 291	your setup sounds awesome man!!! im gonna be brave and bite the bullet on getting the ERZ resonated testpipes to mate up with my agency power exhaust. so ill have a video of the setup as soon as i get the testpipes in. i just hope that its not crazy loud or raspy,....but eh, what can i say im kind of asking for it purchasing testpipes

06-07-2010, 01:22 PM	#4 (permalink)
Nick911sc A True Z Fanatic Join Date: Feb 2009 Location: Long Island, New York Posts: 1,698 Drives: 2010 Nissan GT-R Rep Power: 22	After seeing your video and the price tag associated with this setup I am EXTREMELY close to pulling the trigger on this setup soon. Saving money with these results are enticing!

06-07-2010, 04:20 PM	#6 (permalink)
bradz Enthusiast Member Join Date: Jul 2009 Location: Pinellas County Florida Posts: 348 Drives: 09' 370z MB 6spd Rep Power: 17	I just bought the same combo and it should be here this week

06-13-2010, 09:24 AM	#14 (permalink)
Nick911sc A True Z Fanatic Join Date: Feb 2009 Location: Long Island, New York Posts: 1,698 Drives: 2010 Nissan GT-R Rep Power: 22	So I was thinking this weekend about how people talking about this exhaust being a little more restrictive when compared to other exhausts on the market. Allowing it to be a little quieter but in return producing a little less gains. But then it hit me. As the first breathing part put on the car yields the most gains; then wouldn't pairing this exhaust with hfc's somewhat negate the smaller gains made by the exhaust alone? There are dyno's on the forum showing huge gains from HFC's and then small from CBE because of the order they were put on, and then the same reversed. So with HFC and this exhaust put on I'd assume that the restriction is moot when put up against the gains over other exhausts paired with HFC's that are said to be less restrictive. Please correct me if my thinking is wrong.

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