intake and results normal? - Toyota Nation Forum : Toyota Car and Truck Forums

djk · 05-01-2009, 07:09 PM

so earlier today i put on an intake into my '03 xle, and i noticed that from first to second gear it took a little longer to shift and at a higher rpm.is this normal? or should the computer adjust for the increased airflow later on? and will this affect my fuel consumption adversely?

mm i tried searching for anything related to this but couldnt find anything

Redline_Me · 05-01-2009, 07:21 PM

First of all you shouldn't have driven you car hard right away. You have to do normal driving for a few min until the ECU adjusts to the increase in air flow and puts in the right fuel amount.

djk · 05-01-2009, 07:29 PM

naw i didnt push it hard at all the first time i took it around. i just drove around the block a few times under 25. i came back then about 20mins later went out to the bigger streets to try and open it up a little and the lag came around.

i'll give it some more time and see what happens. gracias

Dna_splice · 05-01-2009, 07:58 PM

mine had lag b4
i ddnt like it..

my dad tripped about it also
so i went back to stock w/ K&N filter.

i felt slower w/ intake =X ..

djk · 05-01-2009, 08:05 PM

well at the higher rpm's i get a nice kick in speed out of it. so now the ecu adjusted and everything seems to be fine...but i get the engine check light. o.0 any ideas?

Dna_splice · 05-01-2009, 08:10 PM

i had that also.
there was a small vacuum line that i had to connect into the intake.
are all the holes on your intake plugged?

Tremendous_Slouch · 05-01-2009, 08:52 PM

Modern cars are all engineered as a balancing act, toyota has to mate performance, mileage, emissions, and "ergonomics" (rough idle etc.) and give you a car you want to buy. As a result, anytime you change anything in a modern engine its not going to be free. Especially in our lovely state California with the toughest smog laws anywhere (I had to junk a perfectly good truck last year because of that). I dont know if the smog guy will flunk your car for your parts change or not, the only advice i have is keep your old parts!
I dont know how to fix your performance problem, contact the company who sold you the part, if they are a good company they will have a guy who knows something, if not i wouldnt buy from them again.

djk · 05-01-2009, 11:39 PM

Quote:

Originally Posted by Dna_splice

i had that also.
there was a small vacuum line that i had to connect into the intake.
are all the holes on your intake plugged?

yea i plugged up the holes i didnt need to use. did that solve the engine light problem?

i kept all the stock parts just in case i need to put em back in or something. the intake is a weapon-r one and they said it should pass emissions and it came with a CARB # and sticker. that should be enough for them not to gimme a ticket if i get pulled right?

Redline_Me · 05-02-2009, 12:52 AM

I been wondering about that intake.

IDK if unplugging the ECU would reset it and it takes the new air/fuel ratios right away.

Gellenole · 05-02-2009, 06:58 PM

Quote:

Originally Posted by Redline_Me

I been wondering about that intake.

IDK if unplugging the ECU would reset it and it takes the new air/fuel ratios right away.

once you install your intake, i'd take the power off for 15 mins, and then re-attach so ECU would learn in about 20 mins.

djk · 05-03-2009, 10:49 PM

would unplugging the ecu vs unplugging the power make a difference? i had the battery unplugged the whole time while i was installing it

hrm

Gellenole · 05-03-2009, 11:06 PM

if you had the battery unplugged then you should be ok. I don't feel a difference at all, except a small boost in higher RPMs, lower RPMs stay the same.

try resetting once more.