Ok, first of all let me thank you in advance for all your help on the subject.

If you take a look at my current mods, how much is it killing me to have the RSM 62 MM Throttle body on the Ecotec? If I return to the stock TB, how much of a difference is there? This was one of my first mods, and I am considering selling it if there is enough low end power that will return.

Thanks for the input +/-

it wont really make a huge difference, perosnally I'm thinking you might being losing low end form the fact that you have the bigger TB and the 4-1 header. I woudl ditch the pacesetter and go with a 4-2-1.

as for how much of a difference... it takes literlly 5 minuets to swap TB's on an eco.... swap um and see what you think

I can't really answer this question, I don't know how a larger throttle body would affect your motor with all your bolt-ons.

However, if you decide to get rid of it. I would definately be interested.

Are you saying that you have lost low end power? I cant see what your mods are? So give me an idea of what you have, I am bout to do these mods to the '03. Would love to have the input before hand.

Engine:

RSM 62MM Throttle Body
RSM Intake
RSM Lightweight Crank Pulley
Pacesetter Cat-Back exhaust
Valve cover breather
Lower engine mount
Pacesetter 4-1 header
high flow cat 94035
30inch resonator(Thrush)
Painted Valve Cover
Painted brackets
Hydralic prop-rods on hood(MILLER PERFORMANCE)
B&M Trickshift
Mobil 1 only!


Here you go.....

i had a 62m tb on my 2.4 and it killed my time i was a second slower but i also had other issues. it seems like 62m is too much until u do some internals, but this is what i noticed the my 2.4

or until you have forced induction

you cant compare results from a 2.4 and an eco. the 2.4 has a 52mm TB stock, and the eco has a 58mm. I would say to swap back to the stock one and see if its better, if it is, then sell the RSM one.


Ill make a sig someday