Ok, I know there are probably other threads for this, but I've looked and couldn't find any. I've seen some really nice ATs on here and, seeing that I bought my 05 AT used, I didn't have much of a choice for a transmission. I wanted to start a thread that helps people like me with a AT on where to start with engine mods. I'm more of a all go, no show type of person myself. What would be a good place to start whether your looking for a 20-30hp increase or 75-100hp+? Engine management; how you can find hp there? FI? Maybe even some specifics on the 4-port and 6-port engines? Maybe you guys with major mods done can list what you had done, how much would someone expect to pay, how does the car handle afterwards, pros/cons? I mean I know its a lot of info for one thread but a start would help since I don't see that much traffic for the ATs on here, and I'm here almost everyday. Thanks! Hope to get something started ;-)

 

This section has many specific AT mods.. There's plenty. I'd doubt you'd get close to +75 HP increase though. As for the 4 port and 6 port engines, since you have an 05 AT, you have the 4 port. Which is very different from the 6.

 

right but ima sound stupid by saying this. i read sumwhere that a d port is 6 port ith two of them closed or sumtin like that. true or not true? if so, could we unlock/open the other 2?

 

yea i was in the same position you were chilboy bought my 8 used and wish i could have a manual, but for the price i got it for i cant complain. but mods are deffinitielly needed.

 

ya i mean mine was 05, GT AT, everything but the 6 cd and the nav, only 8900 miles on it. they had it for 21k and i got it for 19,800 after out the door. and white is my fav color on cars. btw, not much of a choice when it came for used 8's in da ocean city area ya kno.

 

That's everyones excuse for getting an AT. Price. And sure, that was mine too..
As for the 6 port and unlocking 2 from 4 and wtf? I'm confused.. I don't know?

 

ok im on my Treo and the qwerty on here sux. i read sumwhere that the 4 ports are just 6 port engines with 2 ports plugged or locked or something. i have no idea what else it said but it sounded bogus.

 

the 4 port and 6 port are different from 5k rpm upwards.......the 4 port also has a 4 speed tranny, which means your acceleration would be slower than a 6 port
and your whp after 5k rpm would not go up as much as the 6 ports, I am not gonna say like phil and say FI is your only option for any real significant hp gain, but you do need a new emgine management to get the best out of your mods, thats all I'm saying on this thread since I have over 500 posts on this subject already

 

You've correct. Your friend need to read a little more on the 4port vs 6port. My reason for the a/t is and was I am lazy and did not want to shift.

 

phil quick question, i was reading up on some of your threads. did you get that manual shift mode fixed after the s/c was installed? did you dyno it all? numbers?

 

I ended up adapting to the pcm for the tranny in the short term and lifting until it shifts (with the new found torque/boost this will suffice until something better comes) and it's not that much of a hindrance. The fix, when available, will be a story for another thread. Any dyno runs that I may have been done are not for publication at this time. We,CRH, MM and myself, have some items that need attention and then we will dyno for possible publication. HP numbers, go to the Pettit site and see what he promises as that is a good place to start.

I know not what you really want but if it's a fire breathing dragon - sell out quick. If it's a really fun car with sufficient power then the 4a/t can be modded for the extra power.

Phil

 

ahaha ya fire breathing dragon, riiiiight :-P na man. I was originally gonna go with the ricer thing (01 or so accord coupe v6 and mod the helll outta it). bt a honda is a honda, and its DEF NOT an rx8. i have been smoked by sum sooped up civics recently and i dont like it, but im just lookin for sum extra fun. but i want it all to be safe. mayb int x first off then just go with cooling everything down first (tranny, oil, radiator) then mayb cai n exhaust after that. would that be the safest route? im thinkin that way, if im thinking of FI later on, i already got the cooling part down right?

 

phil, I actually think a fire breathing dragon would be much better attained than a fun car to drive.........all you need to do is put those exhaust-fire kits in and your set.........we actually need to put time and effort into this **** =.=

 

ahhhh and another thing, wats the deal with pulleys? must have? and why?

 

??? what? since when did pulleys become "must have"? its still in the back of my car........neglected

 

well a lot of people have them so im guessing they must be a must have. but from wat i am reading, cooling ANYTHING and EVERYTHING is a must right?

 

WOW, You make it sounds like the 4-port are alot slower. Were only talking about 5hp here & closer gearing(Same RPM). MAYBE a 10th in the qtr mile. An intake, supercat and an AP pulley and a 4-port will more than cover that.

 

definitly not 5whp dude, I'm not joking......or maybe its just my car, I'll make atilla race someone
5whp does not equal pulling away 2 car lenght in 3rd gear.........

 

cooling the tranny is everything, our tranny is this blocky piece of crap with a black tray under it........and our flexplates suck T.T

 

flexplates, thats another to add to the list of mods. wat about engine cooling? radiator and fan right? and an oil cooler too. i wanna do those before i decide to drop anything major on da engine ya kno. she'll run fine bone stock if i just add those right? then mayb get int-x, cai, exhaust, in that order? or int-x first?

 

No, but driving skills will!!! Manual Mode verses D-mode. Another point the auto 8 pulls quicker off the line at about 1500rpm's than brake standing with the peddal floored! Go figure?

 

Underdrive pulleys can free up some HP(Not make). Most people get the AP pulley(Most underdriven pulley). I would'nt belive the claimed HP gains from the websites(even if they have Dyno graphs) but 1-3HP gains more likely.

 

ey man, honestly, go to youtube, theres a vid of two bone stock 8's, one auto and the other stick, tell me wat you think? the manual is A LOT faster than the auto. ATs might get off the line a tick quicker because of the torque but other than that, nothing. and question, does turning the DSC off do ANYTHING other than let your car go nuts in a turn? i mean i topped out t 125 in 3rd and 4th... gr gr gr

 

wat im saying is this, at least a good 20-30 hp without FI would b nice. just sumtin that keeps those friggin civics at bay :-P

 

Yeah, seen the vid. The MT is faster than the AT. No dout about that(About 1/2 second in the qtr). I read somewhere the vid was made to make the AT look alot slower. Someone here said look at the tach neddle of the AT(The vid was taken from inside the AT). The tach was kept in the lower RPM range and not redlined!