I am trying to figure out what mod will be best to get next. Something that will compliment what i already have. Any insight would be appreciated.

Details:

2003 Sedan 5AT with 109k miles
Motordyne 5/16 spacer
Z tube
3 inch catback with Flowmaster 40
Stillen intake

Tonight i bought:

M2 y pipe
UR crank underdrive pulley
Transgo shift kit

I've got about 600 bucks left, what mod would best compliment what i already have?

Thanks

Dave

PS...i was looking at 3.7 vlsd pumpkins but can't find but 1

Dunno

Tune - uprev osiris

WHS^^ all day long. ART pipes and the 3.7 diff are great next choices as well.

3 votes for tune. Could go art pipes then follow all with a tune. As far as the pumpkins go just keep searching marketplaces, one will pop up in time

4 votes for a tune, 3.7 diff is a close second

Early 03 sedans unfortunately aren't able to be tuned with Osiris/Uprev

How do i know if I have an early 03?

How are they tuned then?

Take off those cats next, get ART pipes or HFC's then worry about a tune...grounding kit will help out with shifting

if you have the trunk with the square on the trunk...referred to as "doggy door" it's an early model that can't be tuned

thanks, i do not have that.

but Tune is prolly out of question. I just called Boston Dyno, they want 650 to dyno tune, plus i need to supply the Osiris so thats 1350.00 for a tune, **** outta here.....Is that a normal price?

That seems a little high, but yes a tune will be more than 600. For 600, I'd consider front lip, wheels off craigslist (including oem coupe 18/19 and g37s coupe 19), or works bell paddle shifters

Tune is what you need as long as it's a 2003.5

I think you can buy pre-tuned "out of a box" tunes that will be cheaper, but it won't be as beneficial.

Even an out of hte box tune will help tremendously over what you're currently running though.

If you have all the engine mods you plan, then get a tune. If you plan more, finish then tune. Uprev comes with 3 tunes that are custom done by datalogging. You send them your datalog via email and they do a custom tune and email it to you. It is best to dyno tune, but this is as close as you can get without a dyno. Also, they sell additional "etunes" for $50.

In addition, you can have 5 tunes on your car at one time. They are controlled via the cruise control. You can get more info on their site.