I have a 04 s2000 ap2 and now I installed a invidia n1 dual exhaust will flash pro work on a 2004 it says it would work 06 nd up also if I don't tune it will that mess up my motor

 

Flashpro will only work on 06+

Flashpro details

 

As stated above, it wont work. Your options for standalones are kpro, aem, haltech at the moment, if your looking for more of a piggyback, then there are other options too

 

whats does piggyback mean? Also is Hondata's FlashPro for 06 and up comparable to AEM's stuff?(they seem so much more expensive and I don't even know which one is the right one for me) I have a 2006 S2000.

 

piggyback meaning it compliments the stock ecu. As far as comparing Hondata to AEM, both can do the basics but AEM can get a lot more involved. There are features on AEM that you will never see with Hondata but for most street cars on a simple setup, these features aren't necessary.

 

I see. thank you for clarifying that for me.

 

I thought hondata is a good brand nd if I get the kpro do I have to switch some parts

 

u be fine for now it won't mess your motor up

 

Can I use the hondata kpro for my 04 s2k

 

Yes, but it's kind of a waste to do a tune with an exhaust only. At least get a HFC or testpipe to go with it, and even then you're talking about nearly 2k (if you buy new) in ECU/tune to gain like 10 whp. Most of your 'real' gains will be mid-range. I think you need to do some research and decide what will work best for you and your car.