Hey guys, i got a 97 dodge neon with a 5-speed and DOHC engine with the sohc bottom end and 2.4L top end,no cat, blocked egr and cai. My question is i got a 52mm throttle body off an auto neon, now, with the 49mm throttle body when i go to haul *** it pulls like a S.O.B after 4200 rpm all the way to 6500, but now as if i were to put the 52mm on there, it pulls hard at idle to 4200 but doesnt haul *** past 4200rpm.From my point of view i think the 49 is way quicker, or maybe im doing sumthin wrong.... plz help its confusing me lol... btw, is it hard to change the engine wiring harness? thanx guys!

 

welcome to DF. i see you are from pottsville. i thought there was a law that if you lived there you had to drive a 4X4...... sorry i cant answer your question, just wanted to say hi, from one hick town in PA to another.

 

fyi 2.4L DOHC top end and 2.0L DOHC top end are the same. The heads are identical. just making sure you know. are you on stock pistons? if you are then you are actually a little less powerful than a stock DOHC engine because of compression differences.

bigger tb should equal more power. completely. my car's power band did not change when i did this swap, the car was faster through its power band and all around.

 

see thats what i thought to about power all the way up, but maybe its juss the thottle body itself, iv also heard on neons.org that sumtin called a kickdown thingy?? idk... but anyways yes i knew that the headsare the same butthe lifters and cams r smaller tho in the 2.0L, and i do have stock pistons. I did like how fast it cam up ta 4200 rpms tho but i juss wish it would push me back a lil like it did with the 49mm did after 4200... very confusing ha

 

so do you have a atx or a mtx... kickdown is for atx cars... the tb sould add a bit of power period... certain years you did have to switch the sensors over from the mtx tb to the atx tb... is your tps installed correctly... may be 180* off or may just not be in the groove...

 

yea i have a 5 speed. but i also checked the tps 3 times and its installed good.. what if i took the spring and butter fly out and put it with the 52mm one?

 

would having the tps mounted upside down matter?

 

i did try that and it didnt make an affect b4 or after lol iv tryed everything

 

the only difference other then size between the two tb's is the spring...

 

so what u guys think the prob is??