Re: Tales From The Chipped

[Dan Hamren <dan@magnitude-electronics.com>]

Mike-  I was told by Gary Lewis that the spring may need a bit of working in.  I
didn't try adjusting the allen bolt on top of the waste gate cap, I hope I don't
need to.  I think once the spring is worn in a little I won't be getting this
problem.  Thank Goodness, I didn't want to buy a fuel pump/filter.  Today driving
to work I got it up to 1.8 bar and I noticed that the power leveled off.  Maybe
its is already worked in.  No readings higher than that today. As for my boost
gauge, I might have the only one that works properly,  I was getting 1.4 readings
(pre-mad... I mean, mod)  anytime I really stepped on it.  Anyway I am looking
forward to catching up with Howard Dinits on 101 south, and show him what it means
to be MAD! HA HA HA HA HAAAAAA!!!
Dan Hamren
1987 5000 Family wagon  (Addams Family)

MSV96@aol.com wrote:

> Hi Dan,
>
> Reading your accounts of the qlcc mod installation gave me an ear to ear grin!
>
> Now then, the problem you are experiencing. You are hitting overboost. Why? I
> don't know...you will have to troubleshoot that ;-) I know, lotsa help huh. So
> yes, it is a "fuel delivery problem" since it is the fuel pump being
> temporarily shut off by the ECU. Dammit Igor!
>
> I was hitting overboost last summer (same mod as yours) but the problem has
> mysteriously "cured" itself. (I think from moving a leaking vacuum line enough
> to reseal that I need to change someday soon.)
>
> You are hitting 1.9 bar?! On the dash gauge? Way too high (I know, I
> know..."Igor" worked wonders but). The qlcc mod is only supposed to max out at
> 1.8 bar _and_ the dash display normally reads both low, and slow. The
> overboost fuel cut-out is 1.95 (I think) bar on the qlcc mod. When I was
> hitting overboost it was with the dash display reading 1.8 bar...mine reads
> low.
>
> Here are the things to check:
>
> The hose from the throttle body to the lower side of the WG. A leak there will
> cause overboost. (That is the hose I know I need to replace.) While you're at
> it, the hose from the WGVF to the top of the WG is notorious for being
> rotten...it won't cause overboost however, not enough more like it.
>
> The WG may be sticking...(I doubt it if this just started with the mods).
>
> The 1.8 bar spring may be too much (if so adjust the spring perch per
> instructions on Scott Mockry's web site). I run the same spring myself,
> started with the stock one, then Scott's 1.6 bar (Wolff has that one now), and
> I got the 1.8 as soon as Scott mentioned he had them.
>
> Hope this helps give you some things to look for.
>
> The bad news is that once all is fixed, your power will not feel quite as nice
> as it does now since it won't be quite as much boost (close though).
>
> Regards,
>
> Mike Veglia