Fellow Member (>400)
Join Date: Mar 2016
Thanked 13 Times in 13 Posts
So I decided in the end to give my car to a specialist here in the UK to deal with the hot start issue. Along the way, we found it had a boost leak - normal! So the first dyno showed 438bhp and I laughed wildly. I told the shop to contact me when there are no leaks. Fast forward 5 weeks later (still don't have my car) we have an update.
The following works have been carried out under my instructions - not because they needed doing but because I'm a firm believer in if its going to cost less in the future, and it's not impacting things majorly on a personal note, then may as well gulp the cost now and be done once in for all!
- Replacement of crankshaft position sensor (preventative maintenance)
- Replacement of all 10 coil pack (preventative maintenance)
- Replacement of Water Pump (with metal impellers) (preventative maintenance)
- Replacement of Thermostat (preventative maintenance)
- Replacement of Coolant temp sensor (preventative maintenance)
- Replacement of Fuel Pump and Fuel Filter as we found the new ones installed were broken thanks to the improper installement of the previous shop (who will be in time, reimbursing me - still need to chase!)
Granted that I fit my ESS VT2 kit but essentially it felt much faster and responsive and so without a dyno or smoke test I was none the wiser.
So the shop called me back to say after replacing all those items, the hot start issue still persists! So he asked me to send my ESS cable/flash tune to them which arrived at their shop today. His theory is that he will update my DME SW to the latest and reload my tune to see if that makes any difference with the hot start issue. I hope it does because the bill is starting to add up!!!!!!!
Secondly, speaking to Jim Colley, he believes this could be hot fuel evaporation at the fuel rail. I totally understand the concept, but fail to understand how the day before it was charged, I never had this problem, yet soon as the charger goes on, this occurs.
One key update is that my kit is actually the 650 VT2 kit not 675. I bought a new kit but old stock and when I got my dyno graph it shows 640bhp at the engine. When I started comparing notes with other friends on the 675 kit, all had about 660bhp on the same dyno, confirming that my kit is indeed the 650. I'm not at all bothered because I got it for a great deal (well, not so much anymore since I've going to end up paying so much in diagnosis and labour) but just wanted to share my experience.
The car will be ready this week pending all being well! I've got a lot of faith in this garage who are an approved ESS dealer and have installed 10 kits already this year.
I'll be back with an update soon, ready to tear up some Godzillas and AMGs!
Last edited by Awbimmer; 20th May 2019 at 09:35 PM.