X intake DIY + Install vids + AFR and Dyno Comparisons - Page 14

soxfan143 · 01-07-2008, 11:02 PM

You have the reflash, right?

***Whocares05050*** · 01-07-2008, 11:27 PM

Looks to me this intake runs WAY to lean. Thats minly why your getting the power. But, to lean for my blood.

ibanez37 · 01-07-2008, 11:38 PM

Looking good Q. I dig the black coupler more, but still looks great! My CRV tube and lid should be here Wednesday and my bracket is paid for, as well as my filter. Hopefully all is here before Friday in time for the possible track time

**CaliGuy** · 01-07-2008, 11:42 PM

Quote:

Originally Posted by Whocares05050

Looks to me this intake runs WAY to lean. Thats minly why your getting the power. But, to lean for my blood.

According to the place I dyno at the AFR is very safe where it is with the X intake (I specifically asked them).

***Whocares05050*** · 01-07-2008, 11:44 PM

Quote:

Originally Posted by CaliGuy

According to the place I dyno at the AFR is very safe where it is with the X intake (I specifically asked them).

13's is pushing it. Definitly not as safe as stock AFR's. I would rather see them in the mid 12's, not low to mid 13's. Your damn car idles at 14.7 for crying out loud.

**CaliGuy** · 01-07-2008, 11:48 PM

Quote:

Originally Posted by Whocares05050

13's is pushing it. Definitly not as safe as stock AFR's. I would rather see them in the mid 12's, not low to mid 13's. Your damn car idles at 14.7 for crying out loud.

Well, I admit, I know little about AFR's...I'm only reiterating what I was told by the dyno shop...I'm going to ask Highrev1's opinion re this as I trust him more than anyone else...

Anyway, I appreciate your input...

***Whocares05050*** · 01-07-2008, 11:51 PM

Quote:

Originally Posted by CaliGuy

Well, I admit, I know little about AFR's...I'm only reiterating what I was told by the dyno shop...I'm going to ask Highrev1's opinion re this as I trust him more than anyone else...

Anyway, I appreciate your input...

No problem. Im in no way bashing him, just stating what i know, and my experience with aftermarket parts, and tunning.

***Whocares05050*** · 01-07-2008, 11:52 PM

If i were you, i would get an AEM FI/C installed, and tuned if you add any further aftermarket parts. Then have them richen you out.

bizzybearfigiblue · 01-07-2008, 11:56 PM

Quote:

Originally Posted by Whocares05050

13's is pushing it. Definitly not as safe as stock AFR's. I would rather see them in the mid 12's, not low to mid 13's. Your damn car idles at 14.7 for crying out loud.

i'm gonna have to disagree with u on this one... even 13.5 is safe on any N/A Honda... most of the Si's stock are close to the low 12's which is considered very rich... just look at a stock Si's exhaust tip... that thing gets black quick...

for this intake to lean it out a bit shows what this car will do with a little bit of tuning... ie: the intake make the A/F almost ideal for a N/A car...

***Whocares05050*** · 01-08-2008, 12:00 AM

Quote:

Originally Posted by bizzybearfigiblue

i'm gonna have to disagree with u on this one... even 13.5 is safe on any N/A Honda... most of the Si's stock are close to the low 12's which is considered very rich... just look at a stock Si's exhaust tip... that thing gets black quick...

for this intake to lean it out a bit shows what this car will do with a little bit of tuning... ie: the intake make the A/F almost ideal for a N/A car...

And i would have to disagree with you. Car manufactures make cars run a little on the rich side, for longevity of the motor. The car revs out to 8200 RPM. They want to make sure it dosnt blow up in the process. Look at the car get even richer in v-tec. SAFE man. I just said it wasnt AS safe as stock is all.

**CaliGuy** · 01-08-2008, 12:00 AM

Quote:

Originally Posted by Whocares05050

If i were you, i would get an AEM FI/C installed, and tuned if you add any further aftermarket parts. Then have them richen you out.

You make a good point. I'm likely not going to be doing any additional mods (maybe an exhaust) until I go FI, at which time I will need a tune anyway...Even if I add an exhaust I'll get a dyno to see the AFR and whp gains...I've been thinking about a wideband AFR gauge for a while now (never a bad thing to have) since I plan to go FI later anyway...But really, you should be getting a dyno after any engine mods regardless...I mean does anyone know if any other mods make you run lean/rich and in what combinations...I wouldn't limit this to the X intake...

***Whocares05050*** · 01-08-2008, 12:02 AM

Quote:

Originally Posted by CaliGuy

You make a good point. I'm likely not going to be doing any additional mods (maybe an exhaust) until I go FI, at which time I will need a tune anyway...Even if I add an exhaust I'll get a dyno to see the AFR and whp gains...I've been thinking about a wideband AFR gauge for a while now (never a bad thing to have) since I plan to go FI later anyway...

True, but i would wait. no reason in wearing down the o2 sensor any faster before you go boost.

***Whocares05050*** · 01-08-2008, 12:03 AM

A header will also make you lean out slightly.

**CaliGuy** · 01-08-2008, 12:07 AM

Quote:

Originally Posted by Whocares05050

A header will also make you lean out slightly.

I won't be getting a header. We get royally f'd here for no cat, which rules out a RH and I see no point in replacing a stock shorty with another shorty...

hawjdude · 01-08-2008, 12:08 AM

to my knowledge: when tuning an NA motor, you would typically want an a/f ratio between 12.9-13.5. optimal power would be usually made around 13.5. this is why X's intake is making the power it is because it establishes an a/f ratio of around 13.5 throughout the rpm band. its not as safe as the stock a/f ratio which is richer but most will say 13.5 is ok. i guess when you get higher than 13.5 is when you should worry especially when the car is under load or accelerating.

klk15 · 01-08-2008, 12:11 AM

does anybody know the a/f ratio of the injen CAI sorry if this question has been answered allready....

bizzybearfigiblue · 01-08-2008, 12:14 AM

Quote:

Originally Posted by Whocares05050

And i would have to disagree with you. Car manufactures make cars run a little on the rich side, for longevity of the motor. The car revs out to 8200 RPM. They want to make sure it dosnt blow up in the process. Look at the car get even richer in v-tec. SAFE man. I just said it wasnt AS safe as stock is all.

ok so we're talking about longevity now... now that makes more sense b/c i've seen motors run with a 13.5 A/F for over 100k miles and are still running strong...

Honda made the cars run on the rich side for safety of the motor which is tru... they also set the limiter to 8200 even when the first part to lose any type of reliability (oil pump) happens around/above 8700... which is y the reflash only allows 8600 (still safe)...

i agree with u that for longevity (200k+ miles) that these numbers wouldn't be good... but for the majority of us, 200k+ isn't realistic right now... and are willing to run the car a little bit leaner...

01-07-2008, 11:02 PM	#261 (permalink)
soxfan143 Senior Member Join Date: Nov 2007 Location: Lynnfield, MA Age: 34 Posts: 2,055 Mike iTrader: 2 / 100%	You have the reflash, right?

01-07-2008, 11:38 PM	#263 (permalink)
ibanez37 Senior Member Join Date: Jan 2007 Location: Chandler, AZ Age: 23 Posts: 1,922 Blake iTrader: 2 / 100%	Looking good Q. I dig the black coupler more, but still looks great! My CRV tube and lid should be here Wednesday and my bracket is paid for, as well as my filter. Hopefully all is here before Friday in time for the possible track time

01-08-2008, 12:08 AM	#275 (permalink)
hawjdude Senior Member Join Date: Aug 2006 Location: MN Posts: 459 iTrader: 0 / 0%	to my knowledge: when tuning an NA motor, you would typically want an a/f ratio between 12.9-13.5. optimal power would be usually made around 13.5. this is why X's intake is making the power it is because it establishes an a/f ratio of around 13.5 throughout the rpm band. its not as safe as the stock a/f ratio which is richer but most will say 13.5 is ok. i guess when you get higher than 13.5 is when you should worry especially when the car is under load or accelerating.

01-08-2008, 12:11 AM	#276 (permalink)
klk15 Senior Member Join Date: Jul 2007 Location: Tampa Age: 22 Posts: 2,396 Kerry iTrader: 6 / 100%	does anybody know the a/f ratio of the injen CAI sorry if this question has been answered allready....