1986 928S
totally stock
No X Pipe

WOW !

Today I got around to upgrading from version 3.5 to 4.0.

The 3.5 really woke the car up and I was happy with those results and would have been happy longterm.

I was skeptical that Ken could make the programming much better, but he really did. With version 3.5, I was always having trouble getting the car into 1st because the throttle response was low, as was the idle. That is now gone.

The most noticeable difference is the linear power curve from start to red line. The car just pulls all the way up the scale and almost seems supercharged. There is power at very low RPMs and no real flat spots on the way up.

Totally worth it.

 

I had no idea there was a version 4, thanks. By the time I get around to buying them, maybe he'll have chips for my 87 S4 5spd as well. I haven't noticed the issues you describe with the 3.5 chips. My 86.5 always starts in 1st.

 

The thing with 1st was when you let out the clutch, it seemed you had to give it a lot of gas not to stall when getting the car in motion. No biggie but seemed to be better now.

 

When did the 4.0 come out?

 

Skipp,

Want to give another charlotte shark owner a ride? I am thinking of placing an order but a comparison would be key.

 

Ian Sure thing.Send me a PM with your number

 

Good opportunity for vid of a side-by-side acceleration run...could provide baseline for before/after chipping, as well. And entertainment.