ihave a 2004 sxt neon.i just put a mpx throttle body and a underdrive pully and for some reason it feels slower. why? i already have all the other bolt on's i need, any help out there?


aem intake
borla exhaust
msd wires
ngk plugs
60 mm throttle body
under drive pully

 

it is going to take some time for the PCM to adjust for the changes... you might not getting enough fuel maybe... I would have to drive it to really understand.... .


swing it on by Houston... LOL.... j/k Hope you figure it out....

 

Coming out from hard acceleration at low RPMS, that throttlebody kills your low end. But it makes it up on the top end.

Other than that, I have no idea. Shouldn't need more fuel, you should be fine for a while before you need inectors(you have a LONG list of mods ahead of you before you need more fuel...).

 

all things you added probably gave you gain of 10whp... which you won't feel. bring it to the dyno if you really want proof.

 

thanks guys. my car has hp but it has a hard time picking up from a dead stop. what should be my next step on getting some torque. i was thinking a cam or headers. what do ya'll think?

 

Depends. What are your future plans?

We have plenty of info up-top for you about things like cams and headers. Knowing what you want to do will help a lot with that next step.

Forced Induction, or N/A is the biggest question.

F/I = Turbo Grind Cam, valve springs, and a long list of parts
N/A= A N/A Big Beefy Cam, valve springs, retainers, Longtube Header, etc.

 

its b/c if you do the calculation for what size TB you need you end up with 55mm the MPx TB is 60mm which is a tad too big for our tiny 2.0L's this is why i am going to see if Modern will make me a custom 55mm TB b/c i dont plan on going FI anymore... too many miles on her for a turbo so i might as well just keep it N/A :-\ and save for something better

 

Because it's a freaking neon and they don't respond to modifications for ****. You can add the same mods to a 1.6l Honda and watch it fly by

 

Hes got a point. ^
Ever see my mods list?

 

if you want to feel a difference, throw a 250 shot of nitrous on that puppy and she will be awsome...........for one pass maybe. hehehe j/k. i agree with uptop and think a 60mm tb is too big unless you go turbo