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Ran this for quite literally 1000 miles on my 23 FL5. It’s a perfect setup for someone that doesn’t need snow tires but still wants to drive in the winter. Wheels are in perfect condition, no curb rash. $1400 OBO. Pickup preferred. Priced to sell ASAP. (Buying these new plus mounting will...

If you’re in touch with PWR at all, can you ask to see if they are developing an intercooler for the FL5?

I took a look through the factory tunes in Flashpro Manager. The ITS factory tune is running a few degrees more timing across the board and has higher torque targets top end. This is where the power difference is coming from.

Because they’re not going to like the results. I’m patiently waiting for HKS and PWR to release their tube and fin style intercoolers, which should not suffer the same tradeoffs as, for example, the PRL.

Went down a long rabbit hole of YouTube videos and HPD catalogs, and the common theme is the following; 1) Airflow really matters. Most of the hoods have extra vents. At the very least, they don’t have the rain shields. 2) They all have OE or OE style tube and fin intercoolers 3) They’re...

before this becomes forum lore, remember that the ITS is running a different tune. Less boost, more timing, different cam overlap.

There’s a small chance you may have not seen a temp above 258 because it can’t actually go above 258 ;)

Even if you invest in an oil cooler, the temps won’t change. The oil temp for these cars is a calculated value based on load, coolant temperatures, IATs, etc. just FYI.

Did any other FL5s overheat that day?

If you have time, I would switch back to the stock intercooler to see how it does. Your IATs were stable the whole time at about 40 over ambient, which to me implies you’re not saturating the bigger IC. Your note about the FK8 not needing to run the heat but the FL5 needing it has me a bit...

Yes, and it also supports variable torque tables by mode (e.g., Comfort, Sport), as well as “multi-tune”, which allows for on the fly adjustment of boost by gear and traction control parameters.

I have had this since new—agree that unless there is a TSB, I’m not taking it in…

Downpipe sure, but really you want to improve the efficiency of the intake side (e.g., intake, turbo inlet, and larger turbo more generally).

I'm not convinced the PRL intercooler is helping in steady state. It might be reducing airflow, and at the end of the day, the car is airflow limited.

My guess is that it’ll gain you 10-15WHP. Whether that’s worth it is up to you…

That’s normal on a cold start. Timing is significantly retarded to heat up the catalyst, which results in rougher behavior.

The intercooler is fairly efficient (and a better design than before). It just needs more airflow. Removing the hood vent shroud will help a fair amount!

I'm disappointed that this loses the OEM valve functionality.

To the OP--going to disagree with the above. This is probably the best, most well-integrated front lip spoiler I've seen so far. Great job.

This appears to make as much torque as the stock motor everywhere, which is why it's so cool.