Julian's '91 200 20vt

[88a5tq]

All I can ever seem to manage is one flame :(
I gave the victims plenty of opportunities to give more space at previous lights:
https://youtu.be/muoCVCBTZqA

[88a5tq]

i am so confused! i unplugged meth injection and did launch control and still only managed one backfire

[loxxrider]

How much boost are you building?

[88a5tq]

I believe the log shows 220 down to 200-210 during the backfire. I remembered you can't view logs at work lol

[loxxrider]

That's weird because it should be more during the backfire.

[88a5tq]

Hmmmm
Add more cowboost?

[88a5tq]

So anyone who may have seen this video:
https://youtu.be/kU_UP6Nonz0
I reviewed the settings from my backed up backup cfg files as that sort of looks like the effect I am looking for. The settings I used were close but a little different. Maybe it didn't throw flames because of how restrictive that exhaust in the video is! I'm going to go back to these settings and have another try

IMG_20170105_231846.jpg (3.75 MiB) Viewed 47446 times

[88a5tq]

Test

[88a5tq]

50 control range was the money shot
https://youtu.be/UG2E75svJls

[Marc]

you're welcome.

[88a5tq]

you're welcome.

Thank you

Finally got around to trying it today

[pilihp2]

Mine at 20 was sweet for a while, but seemingly is different now. Maybe I'm used to it. I'll have to try 50 next time I decide to drive ole turdquat

[loxxrider]

Hahah that thing sounds nasty. I miss having a screamer of a turbo like that!

[Aktapod]

Sounds wicked, man! Can't wait to see it at Carlisle this year

[88a5tq]

Thanks guys it was definitely awesome! I just made an interesting discovery about LC today too. I know, late to the knowing party hah. As I do LC so sparingly, especially since the rebuild, I only just found out today that LC didn't work as I expected unless I had just done a full boost pull (so far, first and 2nd gear were sufficient like in the video) right before doing it. Last week I free revved at a lifted truck that was up my ass with his seemingly only 55w HID on bright in my eyes. After the free rev above my LC rev limiter I hit LC and revved lightly real quick again and backfired real hard on his bumper lol.

So apparently the turbo has to be spinning fast enough to create ~2 bar at least in my case. Is this anyone else's experience? I guess I thought LC was used to spin the turbo up instead, simultaneously.

Kevin I've been watching your thread. I hope you figure out everything with the coolant leak, affordably!

[88a5tq]

Also, Kevin, now I just need to get motivated to go lol

[loxxrider]

I'm not exactly sure what you're saying but if you hold the throttle down and hit lc above your rev limit it all dump a lot of fuel and then ignite it when the rpms hit the lc threshold. And then boom

[88a5tq]

I mean if the turbo is not well spooled in advance, the car makes no boost during LC for a good 3 maybe 4 seconds. My old settings I used at the strip made it spool up during LC but it didn't make all the backfiring. I wander if there's a way to have all these things at once lol

[88a5tq]

Corrected a typo /\

[Midnight]

I've noticed something similar, but I think it has more to do with the extra heat in the exhaust manifold and turbo from being on boost.

Sent from my XT1254 using Tapatalk

[88a5tq]

Ahhh interesting. That's a very good point. I can see that especially being a factor for me with w/m injection. Maybe the lack of boost leaves the charge air and manifold too cool to create the effect. The system starts injection at 1 bar atmospheric so maybe that's the hold up I'm seeing at that pressure. It will hover there with no backfiring for about 3 seconds before the pressure rises to around 120 kpa at 3 to 4 seconds according to the log. Good to see I'm not alone on this. Thanks Jake

[88a5tq]

Went for a romp on the sparsely snow covered parking lots near where I was returning an item today. My original alternator had a loud bearing I was waiting to explode/seize and not long after doing redlined donuts, the belt flew away in the wind on a hard pull on the street. Was damn fun at least lol. Made it home even though it was 6 miles of horrible roads. Blizzard outside kept me company while I changed back to the new alternator. Feels good to be sitting on ass again finally.

Also ordered 80A HPR trans and motor mounts!

[88a5tq]

[88a5tq]

Ordered HPR rear diff mount last minute also!
I'm still on stock 1988 Audi 5000 front brakes and suspension lol. I am pretty careful on the street. There's no need to drive fast when you can drive quick instead to get your kicks!

[themagellan]

You'd be amazed at what some H&R's/BBK and 235 UHPS feel like compared!