intake question and introduction.

MD-370z · 04-11-2010, 09:36 AM

Hi,

I have been lurking on these forums for quite some time now, and have joined quite a bit ago but never got to making my first post, but here it is!

I have had my Z, for 8 months and am very happy with the car its amazing and still puts a smile on my face when i see, and especially when driving it. I have never modified a car and thus this a new a experience for me and Im excited, reading over the forums i decided to order a fast intentions exhaust, which I have done, and cant wait to install this. I also read the thread covering the fact that adding a lot of bolt ons will lean out the A/F ratio and that this requires a tune. for this summer I plan on doing the exhaust, and maybe an intake, LTH will wait for a winter project and after that a tune will be needed as discussed in the thread.

Now my question is, will the CBE from fast intentions and an intake from either stillen or Injen make the A/F to lean or can I install this without a problem?

thanks in advance,

craniac24 · 04-11-2010, 09:46 AM

Quote:

Originally Posted by MD-370z

will the CBE from fast intentions and an intake from either stillen or Injen make the A/F to lean?

Nope.

Vegitto-kun · 04-11-2010, 09:48 AM

from what I heard the car will only start to get too lean if you do intake+CBE+LTH/HFC/test pipes

Zsteve · 04-11-2010, 11:29 AM

Each mode will lean the car out some but not too much till you have all bolt ons. The leaning out will help you gain some power but once you have the CAI, HFC, CBE you will need atune to get you out of being too lean and back to proper settings. CAI and CBE will lean you out a bit but not enough to worry about it.

Trips · 04-11-2010, 11:31 AM

Quote:

Originally Posted by Zsteve

Each mode will lean the car out some but not too much till you have all bolt ons. The leaning out will help you gain some power but once you have the CAI, HFC, CBE you will need atune to get you out of being too lean and back to proper settings. CAI and CBE will lean you out a bit but not enough to worry about it.

6spd · 04-11-2010, 11:37 AM

I guess that according to many dyno reports, the car runs rather rich in stock form.

MD-370z · 04-11-2010, 12:05 PM

thanks for the speedy replies,

so been doing some more research, tony says the wouldn't do CAI and just do drop in air filters, will I see a large gain if i do just the filters? I want my mods to be functional and I like the idea of installing it myself so thats why i'm leaning towards the CAI because it seems fun to install and gains have been proven. why do some people feel that it is not a useful mod though? are the gains minimal if one frees up restriction by adding a cbe?

craniac24 · 04-11-2010, 12:08 PM

Quote:

Originally Posted by MD-370z

thanks for the speedy replies,

so been doing some more research, tony says the wouldn't do CAI and just do drop in air filters, will I see a large gain if i do just the filters? I want my mods to be functional and I like the idea of installing it myself so thats why i'm leaning towards the CAI because it seems fun to install and gains have been proven. why do some people feel that it is not a useful mod though? are the gains minimal if one frees up restriction by adding a cbe?

I'm pretty sure my intake gave me gains above and beyond what the exhaust alone would have given me.

Just did dyno with Stillen Intake and Nismo Exhaust

Zsteve · 04-11-2010, 12:10 PM

Quote:

Originally Posted by MD-370z

thanks for the speedy replies,

so been doing some more research, tony says the wouldn't do CAI and just do drop in air filters, will I see a large gain if i do just the filters? I want my mods to be functional and I like the idea of installing it myself so thats why i'm leaning towards the CAI because it seems fun to install and gains have been proven. why do some people feel that it is not a useful mod though? are the gains minimal if one frees up restriction by adding a cbe?

The drop ins will help with throttle response some but not much in power, maybe 2-4 hp/tq. The stock CAI is only 8-10 degrees above ambient temps, which is about what the long tube intakes do. The long tube intakes widen the MAF section to lean the car out and that is where they get most of their gains. The stock CAI with drop ins also flow 240+ G/S, not sure what the long tube CAIs do.

Zsteve · 04-11-2010, 12:14 PM

Quote:

Originally Posted by craniac24

I'm pretty sure my intake gave me gains above and beyond what the exhaust alone would have given me.

Just did dyno with Stillen Intake and Nismo Exhaust

The Nismo exhaust is still restrictive compared to the likes of FI and other straight thru CBE. A straight thru CBE will net you 20 whp but will be louder.

craniac24 · 04-11-2010, 12:24 PM

Quote:

Originally Posted by Zsteve

The Nismo exhaust is still restrictive compared to the likes of FI and other straight thru CBE. A straight thru CBE will net you 20 whp but will be louder.

True, but my point was that my numbers showed more of an increase than just the FI exhaust alone.

Zsteve · 04-11-2010, 12:39 PM

Quote:

Originally Posted by craniac24

True, but my point was that my numbers showed more of an increase than just the FI exhaust alone.

well since you didnt do a before dyno you really have no idea. All cars are different and some come with more or less power so you have no idea what you were at. Im sure you did get some good gains with both mods but you would have probably got another 10 hp/tq from an aftermarket CBE and your CAI. But it would be louder too so thats a factor for some. For the OP if you are going to do LTH then you are obviously looking for the most gains possible, so I would do FI LTH, CBE and G3s for the max power combo IMO and you will need the tune.

efuseakay · 04-11-2010, 12:59 PM

Just CBE and intake... you'll be fine... also take a look at the R2c intakes too. Best now to consider every option at this point!

fullmonty · 04-11-2010, 05:08 PM

Welcome!

04-11-2010, 09:36 AM	#1 (permalink)
MD-370z Base Member Join Date: Apr 2009 Location: canada Posts: 137 Drives: 370z,MB, sport, m6, Rep Power: 16	intake question and introduction. Hi, I have been lurking on these forums for quite some time now, and have joined quite a bit ago but never got to making my first post, but here it is! I have had my Z, for 8 months and am very happy with the car its amazing and still puts a smile on my face when i see, and especially when driving it. I have never modified a car and thus this a new a experience for me and Im excited, reading over the forums i decided to order a fast intentions exhaust, which I have done, and cant wait to install this. I also read the thread covering the fact that adding a lot of bolt ons will lean out the A/F ratio and that this requires a tune. for this summer I plan on doing the exhaust, and maybe an intake, LTH will wait for a winter project and after that a tune will be needed as discussed in the thread. Now my question is, will the CBE from fast intentions and an intake from either stillen or Injen make the A/F to lean or can I install this without a problem? thanks in advance,

04-11-2010, 11:29 AM	#4 (permalink)
Zsteve A True Z Fanatic Join Date: Sep 2009 Location: TX Posts: 3,298 Drives: the 2 balled club Rep Power: 22	Each mode will lean the car out some but not too much till you have all bolt ons. The leaning out will help you gain some power but once you have the CAI, HFC, CBE you will need atune to get you out of being too lean and back to proper settings. CAI and CBE will lean you out a bit but not enough to worry about it. __________________ 2010 LS3 C6 Silver coupe corvette

04-11-2010, 11:37 AM	#6 (permalink)
6spd A True Z Fanatic Join Date: Aug 2009 Location: South Florida Posts: 3,001 Drives: Q50RS Rep Power: 25	I guess that according to many dyno reports, the car runs rather rich in stock form. __________________ -Jay- jonathanjamesphotographer.com

04-11-2010, 05:08 PM	#14 (permalink)
fullmonty A True Z Fanatic Join Date: Nov 2009 Location: Dirty Jersey Posts: 7,762 Drives: 370 Touring/Sport Rep Power: 34	Welcome! __________________

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04-11-2010, 09:48 AM	#3 (permalink)
Vegitto-kun A True Z Fanatic Join Date: Feb 2010 Location: USA Posts: 2,011 Drives: 09 370Z Rep Power: 262	from what I heard the car will only start to get too lean if you do intake+CBE+LTH/HFC/test pipes

04-11-2010, 12:05 PM	#7 (permalink)
MD-370z Base Member Join Date: Apr 2009 Location: canada Posts: 137 Drives: 370z,MB, sport, m6, Rep Power: 16	thanks for the speedy replies, so been doing some more research, tony says the wouldn't do CAI and just do drop in air filters, will I see a large gain if i do just the filters? I want my mods to be functional and I like the idea of installing it myself so thats why i'm leaning towards the CAI because it seems fun to install and gains have been proven. why do some people feel that it is not a useful mod though? are the gains minimal if one frees up restriction by adding a cbe?

04-11-2010, 12:59 PM	#13 (permalink)
efuseakay Enthusiast Member Join Date: Mar 2010 Location: The DAYNGA ZONE! Posts: 404 Drives: 2010 G37xS Sedan Rep Power: 15	Just CBE and intake... you'll be fine... also take a look at the R2c intakes too. Best now to consider every option at this point!