5th Generation Maxima (2000-2003) Learn more about the 5th Generation Maxima, including the VQ30DE-K and VQ35DE engines.

Holly Crap!!! Installed Injen Cai And Lost Power!...what Am I Supposed To Do?

Old Sep 11, 2004 | 12:32 AM
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Holly Crap!!! Installed Injen Cai And Lost Power!...what Am I Supposed To Do?

i just installed the injen cai on my 2k2 3.5 and instead of running 14.4s im running 14.7s at best...in the same conditions...i also feel a lag off the line...and the tires dont break out like they used to...am i missing something?...help me out please...
Old Sep 11, 2004 | 01:54 AM
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Is this anything new? Let me guess what the next thing will be, SES light on?

Is it possible that you can't expect any gains with an intake only?
Old Sep 11, 2004 | 04:03 AM
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MaximusLow-- I have an idea... reinstall your stock intake.
Old Sep 12, 2004 | 04:00 AM
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Try to get your money from Injen/ Shop and show the time slip for proof that you lost power.
Old Sep 12, 2004 | 05:26 AM
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I am not surprised, the injen sits close to the radiator. Sell it and get a berk
Old Sep 12, 2004 | 05:33 AM
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Did you reset the ECU after you installed it?
Old Sep 12, 2004 | 06:01 AM
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You need Place Racing style CAI for true CAI.
Old Sep 12, 2004 | 06:28 AM
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Not that hard to answer your question. If you lost power, go back to stock.
Old Sep 12, 2004 | 07:11 AM
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hahaha...i just find it funny that i spent 200 some odd dollars on a power adder and lost power...way ta go injen...thanx guys...Caspers goin back to stock...
Old Sep 12, 2004 | 07:15 AM
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Originally Posted by MaximusLow
i just installed the injen cai on my 2k2 3.5 and instead of running 14.4s im running 14.7s at best...in the same conditions...i also feel a lag off the line...and the tires dont break out like they used to...am i missing something?...help me out please...
Put your stock resonator back in and run a filter with it.
Old Sep 12, 2004 | 08:28 AM
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besides Place racing intakes..
short ram intakes works best on fifth gen (i.e Berk intakes)
Old Sep 12, 2004 | 08:49 AM
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take off the intake.. they lose you power, not gain. but people refuse to accept that.
Old Sep 12, 2004 | 08:54 AM
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an injen warm-air intake is a sound mod, not a performance mod. you are
sacrificing horsepower for that cool sound.
Old Sep 12, 2004 | 09:12 AM
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Originally Posted by MaximusLow
i just installed the injen cai on my 2k2 3.5 and instead of running 14.4s im running 14.7s at best...in the same conditions...i also feel a lag off the line...and the tires dont break out like they used to...am i missing something?...help me out please...
I doubt you lost power. Usually you lose alittle low end torque, not power. With intakes it stretchs the power band and your overall gain in power and torque. Also how long was the car running????? I know with my car when it cold it fast, and when it running normal temp it alittle slower. You should also reset the ecu.!!!!!!!!!!!!!!!!!!

BTW you don't have a check engine light on, do ya??????????
Old Sep 12, 2004 | 10:14 AM
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nope..no check engine light nothing...i did reset the ecu...i disconnected the batt. terminal for like 10 mins then idled my car for another 10 then did some normal driving for another 10...till this day nothin...i deffinately lost torque...before if i floored it my tires would just break out and smoke...now its a few chirps and im goin it feels like its lagging a little and then at like 4500 it starts pullin better...im deffinately returning it..i hope nopi takes it back...ANYONE WANT TO BUY AN INJEN CAI???? lol let me know...
Old Sep 12, 2004 | 10:36 AM
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IIRC, that's not the correct procedure for resetting the ECU on 3.5 Maxes.
Old Sep 12, 2004 | 11:08 AM
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lol i hope you reset it cuz i was about to buy one
Old Sep 12, 2004 | 12:32 PM
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yeah, you did NOT reset your ECU. 2002+ (VQ35DE) uses a different procedure for resetting the ECU, and it does not involve disconnecting the battery.
Old Sep 12, 2004 | 06:56 PM
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What do you do when you get the SES light? That's what I have now. I installed the Injen a week ago though.
Old Sep 12, 2004 | 07:37 PM
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Originally Posted by MaximusLow
hahaha...i just find it funny that i spent 200 some odd dollars on a power adder and lost power...way ta go injen...thanx guys...Caspers goin back to stock...
Here's a good opportunity for me to prove a point. The best is not always the most expensive out there.

I'll send out one of our parts to you for free, it'll basically convert your injen to our setup (Berk Technology). You'll use the same Injen filter so we will be keeping everything constant.

Go back to the track, let everyone know what time you get now.

Contact me for details.

Regards,
Bryan
bryan@berktechnology.com
Old Sep 12, 2004 | 08:06 PM
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i keep saying that Injen sucks but no one wants to believe me.
what the hell do i know?
Old Sep 13, 2004 | 05:12 AM
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Originally Posted by EvilRoadsVictim
take off the intake.. they lose you power, not gain. but people refuse to accept that.
...and people keep trying to market Berk intakes like they give you horsepower. I've learned a while ago that intakes are only for looks.
Old Sep 13, 2004 | 05:31 AM
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Originally Posted by Ghase
I doubt you lost power. Usually you lose alittle low end torque, not power. With intakes it stretchs the power band and your overall gain in power and torque. Also how long was the car running????? I know with my car when it cold it fast, and when it running normal temp it alittle slower. You should also reset the ecu.!!!!!!!!!!!!!!!!!!

BTW you don't have a check engine light on, do ya??????????

He didn't lose anything, his powerband shifted.Also his ecu like any mod added to the 5th generation has to learn it. Even when i added my Injen, it took about a week before my car felt "semi-normal" again after resetting my ECU.Also adding a cat-back system helps reduce that"loss" of power feeling, with it you gain alot of your low end back.One thing i notice when i had my Injen , before i added my cat-back system, my mid to high end was definitely noticable.

My solution to you is to reset the ECU and get a cat-back system , 2.25"-2.50 set up ,anything over that diameter and you will be creating a top end monster , but you will have no low end grunt to take off.
Old Sep 13, 2004 | 07:41 AM
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try a stillen intake.. cant go wrong with them
Old Sep 13, 2004 | 07:43 AM
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Did your trap speeds change at all? Are you auto or MT? If 6MT, you will want to launch at a slightly higher rpm. That should get you back some torque off the line.
Old Sep 13, 2004 | 08:01 AM
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I agree, reset the ECU with the Technosquare procedures, get yourself a Y and B pipe and you should see some results. These damn computers on cars nowadays really screw up any mods to our cars. I had an Injen w/ a Y & B pipe along with a straight pipe and my car drove like a bat out of hell. Went back to stock intake because my wife drives the car and doesn't appreciate the fine art of modding.
Old Sep 13, 2004 | 08:04 AM
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Originally Posted by cobymoby
Here's a good opportunity for me to prove a point. The best is not always the most expensive out there.

I'll send out one of our parts to you for free, it'll basically convert your injen to our setup (Berk Technology). You'll use the same Injen filter so we will be keeping everything constant.

Go back to the track, let everyone know what time you get now.

Contact me for details.

Regards,
Bryan
bryan@berktechnology.com
I also have the injen and am willing to test this out...can I jump on this too?
Old Sep 13, 2004 | 08:16 AM
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I doubt you lost power.....your gains are probably on a diff rpm range now- besides 4-5hp is all we are talkin' here...dyno and see where your power band picked up, make launching/shifting adjustments
Old Sep 13, 2004 | 08:32 AM
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Injen CAI's are suppost to improve your low end but sacrafice some of your top end (unless I have it backwards).

Also the ECU needs about 200 miles the run throuhg its normal cycle to learn your new Mod to the car and its performance, so it should start to feel somewhat right after about 200 miles.
Old Sep 13, 2004 | 08:41 AM
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Originally Posted by MDeezy
Injen CAI's are suppost to improve your low end but sacrafice some of your top end (unless I have it backwards).

Also the ECU needs about 200 miles the run throuhg its normal cycle to learn your new Mod to the car and its performance, so it should start to feel somewhat right after about 200 miles.
You have it backwards, yes.

Most if not all aftermarket intakes utilize larger piping which tunes the intake for higher-RPM performance at the expense of low-end (due to it being more efficient with higher airflow volumes experienced at high RPM vs. low RPM)
Old Sep 13, 2004 | 09:38 AM
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Originally Posted by Daily Driver2k2
He didn't lose anything, his powerband shifted.
Yeah, it shifted and he LOSS HP in the lower rpms.
Old Sep 13, 2004 | 11:20 AM
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Originally Posted by deezo
Yeah, it shifted and he LOSS HP in the lower rpms.

Its a shame Injen didn't design the intake pipes slightly smaller in diameter,that would net a better balance in Trq/HP gains. The pipe sizing is to large to gain any real TRQ gains, the same applies when you use to larger of a cat -back system, everybody wants the 3"+ sizing exhaust, but what they fail to realize there not pushing a turbo or SC where 3"+ sizing is needed. For our N/A engines 2.25-2.75 is MAX! Anything higher and your car will be making top end power which is useless for daily driving needs, now track racing , thats a diffrent story.
Old Sep 13, 2004 | 11:27 AM
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Originally Posted by Daily Driver2k2
Its a shame Injen didn't design the intake pipes slightly smaller in diameter,that would net a better balance in Trq/HP gains. The pipe sizing is to large to gain any real TRQ gains, the same applies when you use to larger of a cat -back system, everybody wants the 3"+ sizing exhaust, but what they fail to realize there not pushing a turbo or SC where 3"+ sizing is needed. For our N/A engines 2.25-2.75 is MAX! Anything higher and your car will be making top end power which is useless for daily driving needs, now track racing , thats a diffrent story.
I had an idea that I'd love to try sometime with my Place Racing CAI. I wonder if it'd be possible to build a rubber hose adapter between the midpipe and the MAF sensor, or even the MAF to cold-air tube that contracted to a 2" opening in the center but remained 3" on either end, so that it added a deliberate restriction. A rubber hose like that would have to be custom built, or maybe some rubber glued to the inside of the metal tube could substitute.
Old Sep 13, 2004 | 11:30 AM
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Originally Posted by spirilis
I had an idea that I'd love to try sometime with my Place Racing CAI. I wonder if it'd be possible to build a rubber hose adapter between the midpipe and the MAF sensor, or even the MAF to cold-air tube that contracted to a 2" opening in the center but remained 3" on either end, so that it added a deliberate restriction. A rubber hose like that would have to be custom built, or maybe some rubber glued to the inside of the metal tube could substitute.
Actually, I could test this out safely by lining the inside of the MAF adapter plate tube with stick-on weatherstripping that I have. The MAF adapter would be the perfect location because of the MAF sensor's screen, which would disallow the weatherstripping from going further into the throttle/intake manifold in the event that the glue unstuck.
Old Sep 13, 2004 | 12:36 PM
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Originally Posted by Daily Driver2k2
He didn't lose anything, his powerband shifted.Also his ecu like any mod added to the 5th generation has to learn it. Even when i added my Injen, it took about a week before my car felt "semi-normal" again after resetting my ECU.Also adding a cat-back system helps reduce that"loss" of power feeling, with it you gain alot of your low end back.One thing i notice when i had my Injen , before i added my cat-back system, my mid to high end was definitely noticable.

My solution to you is to reset the ECU and get a cat-back system , 2.25"-2.50 set up ,anything over that diameter and you will be creating a top end monster , but you will have no low end grunt to take off.
You earn a retarded post of the day award, if we had such.
Old Sep 13, 2004 | 07:00 PM
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ok i THOUGHT i reset the ecu...switched the ignition to "ON" pressed gas 5 times it started blinking that whole deal...but how do i really KNOW the my ecu IS in fact reset.???
Old Sep 13, 2004 | 07:20 PM
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The only true way is to get an OBD-II scantool which can read sensor values, and check to make sure the Long Term Fuel Trim values for both banks are reset to 0.0%
Old Sep 14, 2004 | 07:09 PM
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you think autozone could do it for me?...
Old Sep 14, 2004 | 11:29 PM
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Well....with cold air intakes you loose low end power but gain in the top end....

Great for highway racing, bad for 1/4 mile racing.
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