A bit of backround info on this car / setup:
When stu turned up for me to map the car for him, he asked if I could connect up the boost controller for him, as he didn't want it connected up before he got to me, so that the car drove fine on the way down (which is fair enough),when he arrived, he said that everything was installed, and just needed the 2 pipes from the solenoid connecting to the turbo.
So I pulled out my tool kit, removed the intake pipe so I could get to the stock boost setup. Spent 3/4 hour or so plumbing it in as per the instructions even having to replace 1 of the hoses that was fitted / supplied with the kit as it was miles too big.
Then messed around for another 15 mins or so, getting the intake pipework back in place propperly before starting the mapping.
When it was mapped the boost controller was plumbed in with 1 line from the solenoid to the actuator and the other line going to the j-pipe (as per avcr, greddy profec spec 2 etc and as per the instruction manual).
However this caused the boost to spike a little as it came in very quickly and nice and early giving good response and torque, however as i'm not familiar with this particular HKS boost controller I couldn't completely stop it from spiking and dropping the peak boost, which caused a slight hickup that was noticable but not imo overly intrusive as it was over as soon as it appeared, however once this spike was done with he was happy with the way the car pulled to the redline.
He was happy enough to pay me for what i'd done (setup the boost controller and map the car to perform well).
However a couple of days later he wasn't happy with the spike so went to El and the gang for them to look over the boost controller install.
He then text'd me to ask for a 50% refund, to cover his fuel costs for having to go back to El's place, due to the "cockup" I made when plumbing in the boost controller (even though I followed the instructions). I told him if he was that unhappy, then bring the car back to me, and i'd reflash the stock rom back into it, and refund him in full and he could then take the car to either another geekmapper OR to an Ecutek dealer and pay there prices.
He replied saying if he was gonna come back to me, am I gonna pay the fuel.
To which I replied NO.
Anyhow with regaurd to the post on here:
It seems there is another way to plumb the solenoid in, which uses the stock T-piece as per the OEM boost control setup (un-familliar with any aftermarket controller using this setup),and this is how it was plumbed in, which apparently fixed the boost spike.
So if it is now flat at the top end, it could be a boost controller setup issue (as things have been changed since it was originally setup),or it could be a map issue, as the car won't be coming on boost in the same way as it was, and therefore more than likely hitting differnt load sites, which could be causing it to go rich at top end now or maybe running less timing than it was before again due to hitting different load sites in the map or it could now be picking up knock, due to trying to run too much timing or too much / not enough fuel due to seeing different parts of the map.
Either way the only way to know what is going on, is to find someone to take a look at the boost controller, datalog it or put it on the rollers (although the rollers will only tell half the story).
Oh and just a thought, are you still using the same fuel as was in the tank when it was mapped ?
