Seems slow/sluggish after tune? (w/ pics)

Post by **- Pete -** » 20 May 2020, 09:58

Which version of tune did you do with Hilton?
That seems very low. Did you replace the TCV? To me it sounds like you are only building as much boost as your wastewater (I actually typed wastegate) is set to, which would possibly mean your TCV isn’t working properly. Try unplugging it and if no change in boost, replace it.

Edit: also, do you have a means to look in depth at any codes? ViDA would be best, but some of the higher end readers will suffice. It could be in limp mode.

MisplacedCanuck · Post by **MisplacedCanuck** » 20 May 2020, 10:25

Well! That worked out. Unplugged the yellow (wastegate) line from TCV, eased into throttle on my side road....yep, happily builds boost. One on order now! That was quite easy, just needed a boost gauge!

MisplacedCanuck · Post by **MisplacedCanuck** » 20 May 2020, 10:26

I have a DiCE reader, no codes other then ones related to power accessories that I've since fixed.

Post by **- Pete -** » 20 May 2020, 10:38

Don’t do the aftermarket HD TCV. Plenty of documentation on premature failures & erratic boost & boost spikes which can badly damage your engine. Stock Pierburg is proven & long lasting.

MisplacedCanuck · Post by **MisplacedCanuck** » 20 May 2020, 10:42

That's what I had been reading. Pierburg is on order, should take a week or two. I've plugged the faulty TCV back in to ensure boost stays at 3-4psi. Any risk driving it with low boost pressure?

Post by **- Pete -** » 20 May 2020, 10:44

Nope, other than the frustration of driving your grandmas Buick.

What did Rob say the tune was supposed to target for boost?
Or did you ask?

MisplacedCanuck · Post by **MisplacedCanuck** » 20 May 2020, 11:07

I did ask, target for boost is 12psi.

Funny enough, my last few vehicles have been Jeep Wranglers so this feels fast

Post by **- Pete -** » 20 May 2020, 11:24

Ok. Check your boost hoses too - one right off the top of the turbo & one that feeds from the charged air pipe to the intercooler inlet. If they look sweaty, bubbly, bulged etc replace them. Rein makes good inexpensive replacements.

Edit: where did you put your boost gauge? I meant to suggest this earlier, but I have one of the expensive IPD boost gauges & I really don’t like it. The needle action is notchy. I also have a cheap $10 eBay gauge that’s action is far superior. My favorite gauge is an Omoni my VR.

Seems slow/sluggish after tune? (w/ pics)

Re: Seems slow/sluggish after tune? (w/ pics)