I have a 2000 s40 1.9t i was wanting to buy a intercooler and 3" piping. do i need to buy a different intercooler or would the stock one be ok. also does upgrading to the 3" piping help i just want to make it a little faster but not spend alot of money

 

1. You bought the wrong brand of car if you wanted cheap modding abilities.

2. 2.5" piping maybe 2.75" piping would be the biggest I would go. It is tight in these engine bays and 3" probably wont fit unless major construction is done.

3. If you would make a custom FMIC system you would gain power yes.

 

so you think with a smaller size piping it could be installed with no mods also i still have problems with my car. I have six codes on and i cant figure out what it is. P0505 ----P0245----P0445-----P0031------P0037-------P1446. i replaced my map sensor my thorttle control and oxygen sensors so then i thought it was my cats so i took them off and still the same. when the car is in park and i push the gas quickly black smoke comes out. i checked my turbo for play and no play at all. i think what caused the problem was a resistor i bought to make the car run a bit quicker.

 

your best bet for the intercooler is to buy a universal one off ebay, make sure its big enough, and then fabricate from there out....it can be done just need to do it right...