trbo 6

Have been thinking about this a bit more. My exhaust has been modified recently and is randomly touching the body in one section. Could this be affecting the knock sensor and have the ecu pull timing?

The pump was installed about a month ago and then tuned not long after. The car was running fine up until this week, just in time to stuff up my Powercruise weekend.

I am having the same issue. My car has new coils and plugs. Did a test run with no air filter and no change. I have a new a1000 pump and custom surge so doubt it's the pump, unless the in tank is stuffed, but not sure how it would cause this issue. It's going back to the tuner next week to have a look.

Been a Ford fan since I can remember, had a few over the last 14 years: 302 XC on my L's, later put a 351 in itXL Falcon ute with a mild 302BA XR6T uteBA GTFord Focus ZetecAU XR8 UteBA F6 uteCould never buy a Expensive Daewoo as would never here the end of it from all my mates that I put sh!t on for driving a Holden. Plus I don't like them.

Peak boost is a bit over 20psi from memory.

I'll be there, first event taking my car. Hopefully I don't get stuck lining up to get on the track for too long.

So far so good mate. More power everywhere and car feels like it's coming on boost a bit quicker. George is right again, boost tapers down to 19psi.

Yep, get it now. I just got worried when I saw 11.5:1 on dyno sheet as I was thinking this should be about 8:1. If I had the print out in lambda there would be no confuson. Thanks.

I understand that stoich is stoich, however e85 has a stoichiometric value of approximately 9.7:1 and pump fuel is 14.7:1, so if a gauge is setup to read stoich at 14.7 as 1 lambda then 0.8 lambda is 11.76, however if the gauge was setup to read 1 lambda as 9.7 for e85 then 0.8 lambda would be 7.76. I know there are a few gauges that you can change the stoich value to account for e85. I'm now assuming that the tuners would not adjust the gauge and leave the stoich value at 14.7:1, so the OP's reading of 12.8:1 would be 0.87 lamda which is 8.439:1.

Would it be the fact the the Air fuel gauge is reading lambda 1 at 14.7:1 still and hasn't been calibrated to show lamda 1 as 9.7? So the reading in my case of 11.5:1 is actually 0.78 lambda which is actually 7.56:1.

Meant to say lean not low. Car does feel good but does run slightly hotter on the temp gauge than pump fuel.

I'm pretty sure my car ran 11.5 afrs on e85, which I thought was quite low.