A lot of lag

5.0 V10 50v biturbo - 571 bhp
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Limited100
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Posts: 12
Joined: Sat Nov 16, 2024 6:55 pm

A lot of lag

Post by Limited100 » Sat May 24, 2025 6:41 pm

Current spec:
Secondary cats removed
BMC filters
Wagner intercooler
Dodgy stage 1 map (non-MRC)

Recent dyno at MRC (click to expand):
Image

Dyno run where it made 666 PS and 805 NM: https://www.instagram.com/p/DJ7xlH7I3GF/

(First run it made 20 PS and 50 NM less, then Doug fixed some vac leaks; it pulls stronger at the top end now but won't be driving it much until it's seen to, I'm worried about turbos going and taking the new Wagners with them.)

Should be hitting peak torque at 2k not 4k, turbos maxxed out at stage 1 so guessing a boost leak or something else. Because they're maxxed out we didn't try a stage 2 map.

Anyone seen this amount of lag before?

Gutted as I've already put a lot of money into this project and seller lied about servicing, it's needed loads of bits rectifying and despite saying it had spark plugs done a year ago, on inspection they're stamped 08!

Also oil on the spark plugs so some leaking in the cam cover.

Stage 2 will have to wait.

ATinOf
3rd Gear
Posts: 444
Joined: Fri Jul 06, 2018 7:32 pm
Location: Cheshire

Re: A lot of lag

Post by ATinOf » Sat May 31, 2025 5:19 pm

Not your main issue but - Your leaking in the cam cover could be the solenoids for the variable cam timing, thats an easy fix (relatively, its all relative for the 6) to replace the o-rings if it is

Limited100
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Posts: 12
Joined: Sat Nov 16, 2024 6:55 pm

Re: A lot of lag

Post by Limited100 » Tue Jun 03, 2025 8:29 pm

ATinOf wrote:
Sat May 31, 2025 5:19 pm
Not your main issue but - Your leaking in the cam cover could be the solenoids for the variable cam timing, thats an easy fix (relatively, its all relative for the 6) to replace the o-rings if it is
Thanks, added to the very long list.

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