Turbo Timing on WOT

ByThaBay · 10-23-2021, 02:14 PM

Quote:

Originally Posted by Roninzee

Just wanted to see others inputs on their timing during WOT or pulls.

Since im running a Boosted Performance Mid Mount on E85 14 psi, im sitting around 17 Degrees of timing all the way 4k-7800RPM. Im also on wastegates.

Any suggestions of opinions of it being a little too aggressive or conservative.

Thanks in advance

You can't evaluate timing without checking engine load / AFR - are you holding 14 psi consistently? Generally speaking, timing should be advanced as engine speed increases, unless there are other considerations such as trying to keep torque artificially low. You would typically expect to see less timing at low rpm on a turbo setup to keep torque low and more timing at high rpm as torque begins to drop off. Likewise if engine load is lower before the turbo is making maximum boost, adding timing can help increase torque to make up for the lack of boost.

Roninzee · 10-24-2021, 03:50 AM

Quote:

Originally Posted by ByThaBay

You can't evaluate timing without checking engine load / AFR - are you holding 14 psi consistently? Generally speaking, timing should be advanced as engine speed increases, unless there are other considerations such as trying to keep torque artificially low. You would typically expect to see less timing at low rpm on a turbo setup to keep torque low and more timing at high rpm as torque begins to drop off. Likewise if engine load is lower before the turbo is making maximum boost, adding timing can help increase torque to make up for the lack of boost.

For the AFRs I understand since my AFR gauge is mounted after my mid mount. The tuners generally tune accurately off the factory widebands on the vehicle rather than the after market gauge. It builds quickly but holds 14 psi the entire way.

I had a instance where I was placed at 11 degrees of timing and maxed out at 14 degrees by redline but a different tuner. Which would probably be safer snd conservative I assume?

redondoaveb · 10-24-2021, 09:10 AM

Quote:

Originally Posted by Roninzee

For the AFRs I understand since my AFR gauge is mounted after my mid mount. The tuners generally tune accurately off the factory widebands on the vehicle rather than the after market gauge. It builds quickly but holds 14 psi the entire way.

I had a instance where I was placed at 11 degrees of timing and maxed out at 14 degrees by redline but a different tuner. Which would probably be safer snd conservative I assume?

Generally the tuner should be tuning off the aftermarket gauge.
https://youtu.be/zf3U7OxlwHY

Thread Tools
Show Printable Version Email this Page
Display Modes
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
How to do TDC and correct timing	N370	Engine & Drivetrain	15	10-02-2022 03:44 PM
Timing adjustment and FI.	Ron	Forced Induction	11	07-05-2020 10:38 AM
Afr vs timing	Jinxx	Forced Induction	6	12-21-2018 01:06 PM
Lap timing phone app	CJBinder	Track / Autocross / Drifting / Dragstrip	11	10-01-2015 10:09 AM
timing systems	boosted180	Track / Autocross / Drifting / Dragstrip	0	08-31-2009 03:17 PM