ok two questions for you guys.

first, upsolute tune. for my vehicle they have to solder in a new chip to do the tune i heard this is risky. anyone done this with upsolute and if so how was it?

also i want to instal an mbc. whats the safest psi to boost on a relatively stock setup without messing with injectors and stuff like that?

thanks in advance.

 

Most ECU tunes are done by over-writing the PROM chip (aka "programmable read only memory"). Dunno why they'd be different from other vendors who do this electronically. Mostly they need access to the ECU, which for older cars means shipping the ECU to them. You could certainly buy a used ECU to have a spare and have them reprogram the other.

What is your intention for the MBC? The idea of having a new ECU tune is to allow the computer to add boost when and where needed. The tune program will then determine maximum boost. Are you planning to stick with the stock 12T turbo? Have you researched an upgrade to a 14T (which is what the 200 HP 2.0Ts use in Europe...)?

 

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So on my car they have to solder in a new chip to the ECU which is rewriteable or something of that nature which is what the guy at Upsolute told me. apparently the 2000s are like that. as for the 14t i have researched it but i heard that without bigger injectors and a dyno tune to actually see any benefit at all. i was told that dropping in the turbo alone wont do anything so i was thinking i would stick with the 12t to keep things from getting to expensive. that said i did hear that tightening the wastegate a turn or two on the stock turbo gives it a little kick.

What do you recommend. do you have a lot of experience with these 2000 s40s ?

thanks!

 

people have just told me to put a MBC in there and that makes a difference. i did look into the ARD lightened pulley and the guy from ARD said he had no problems with it but i heard they can hurt your motor due to lack of balance and or dampening effects?

 

The pre-2004.5 S40/V40 had a Siemens ECU and the tunes were via chip swap. It used to be that you had to send your ECU away to apply. I used to hear of good things with the Upsolute tune.

 

Yeah I called the guy at Upsolute. He told me to send him my ecu. I think I'm
Gonna give it a try. He said he solders in a remapable chip and the tune frees up a lot of power. Like 20-30hp and roughly the same amount of torque by adjusting timing and fuel ratios. He said it's conservative though and safe for a daily driver. He said he's done a lot of s40s and they all seem to like it.