Chip Question:

[Mihnea Cotet]

Scott,

The answer is "Yes and no". Some chips are modified in a way where the
stock tension of the spring is sufficient, but in some other cases, it can
be necessary to tighten it down a bit (always in 1/4 of turn steps) in
order to reach the programmed boost values. Now for an RS2 upgrade, a
stiffer spring is necessary as the WGFV can't open more than 100% duty
cycle and in order to get 1.3 Bar at 2800 RPM, a setting of 92% is already
necessary with a stock spring. On a stock K24, a stiffer spring isn't
always necessary but it helps with spool-up at much lower RPM than a stock
spring and also reduces lag dramatically. I know most people think a K24
can't be laggy, well, after you've tried a K24 with a stiffer spring (and a
boost chip with the WGFV duty cycle programmed accordingly of course)
you'll say that a K24 on a stock spring IS laggy! BTDT, I used to think
like many and from the day I've tested a stiffer spring (20% more than
stock, 1.55 Bar absolute boost with WGFV unplugged, ie 7 psi boost), I've
never wanted to switch back to the stock unit, except for chip development
purposes of course, as not everyone might agree with my preferences...


HTH,

Mihnea
At 13:19 18/03/2003 -0500, Suffolk GameServer LAN wrote:

>Sorry for the list posting too..... but I had a general question about ECU
>chips.
>
>In order to realize the potential of a new chip installation, do I also need
>to modify the waste gate spring?
>-Scott in BOSTON