I used to have an eclipse chip in mine and and the only thing it did'nt do was control boost but was ok with a manual controller, the only downside to this was that i had boost creep in higher gears. So i then changed to a major sarcasm chip and that gave excellent results and it controlled boost electronically using all the factory equipment so no need for a manual boost controller and no more boost creep. Moving forward and in search of a little extra i got hold of a genuine v2 sti ra engine and 7k ecu running with a polarperformance sti ra chip which is now fitted into my car and the performance is even better and it holds boost @ 17psi. Either way there are gains to be had from the three chips i have mentioned but there is definately differences in what is programmed onto them and it is noticeable, the main one being that the eclipse chips obviously have problems with 'boost duty' control because they require the need for a manual controller.

How well did they perform on the rollers:

1. Eclipse chip - 270bhp/230ftlb. afr spot on but boost creep'd and fuel cuts .
2. Major sarcasm chip - 295bhp/251ftlb. everything spot bollock .
3. Polarperformance chip - 307bhp/259ftlb. everything spot bollock .

 

sounds like the eclipse chip doesnt control boost very well atall (which was hinted at earlier in the thread) which can only point to a poor map.

 

That's a good comparison there rogos, it's rare to see such back to back tests with figures to back it up! Although our chip came out on the bottom, it's nice to see that ALL 3 were an IMPROVEMENT and like I've been keep saying, all 3 were completely SAFE in terms of AFR's

Maybe some of our more argumentative friends will finally accept that chipping an ECU is the right thing to do!

Obviously I'll be contacting the programmer of our chips to see if we can work out a solution to the apparent boost control issue.

 

I would'nt say your chips are bad because the one i had from you worked fine with a little extra and the afr's were good it just had a qwirk with the boost so to speak. Oh and all the figures i quoted were from surrey rolling road

 

Thanks rogos. I guess it also puts to bed the theory that we are all copying each others software too, as clearly the ones you tried are all different (although your polar chip was in a better spec engine so might not have given such extra bhp with your old engine)

Im sure with a bit more investigation we will get to the bottom of this problem with the boost.

 

Doubt it.

<< Not remapped, not chipped standard, DET free ecu.

Oh and early imports don't need 100 RON fuel, it wasn't available in Japan back then.

 

Good luck on that one !

 

but these chips give you so much bang for your buck

 

Did you manage to sort this problem out?

 

Just stumbled across this thread searching for something else....some of the banter/comments/apparent knowledge made me laugh.

LOL....
Scott.T.....(previously trading as Polar Performance !!!).

 

At least 1 happy customer from 500 - thats quite good going... think it says enough