Bogging Down - Launch

[Ben C34]

I'm sure the tune not being complete wouldn't be helping at all. That's trapping low also.

Get tune and anti lag sorted then post the timimg slip! I'm sure you will be happier then

[Lithium]

Hmm that trap speed is WAY down, I was running higher than that with much lower numbers on a hub dyno - I was expecting at least 10mph more!

Good luck sussing it out, hope it's nothing to major causing the lag etc

[Ben C34]

Can you PM who tuned it? Just out of curiosity

Cheers.

[Adz2332]

yer dont get me wrong the tune is no where near complete and a few other things to sort out......

wil lgo back when its done.

Its just i havent had any time at a prepared drag strip before. like i had no bogging down t mallala doing the drags but that is just a race way unprepared etc

[kaneryan]

bogging down... launch harder.. 5000+ maybe up the tyre pressure so you try and free spin and then work your tyre pressure down from there.... no need really to use antilag/ launch control free revving is fine, but if your computer has it it will assist. dont side step the cluctch either, rid it a bit aswell, this will help with your launch and also your bogging down issue

[Adz2332]

cheers guys for the opinions!

just have to get back out there!

[WantGTR]

havent read the thread but dont be a bitch. do a big burnout and get some head in the tyres and launch it with revs - dont be afraid to rev it to 6k.

[GTRPSI]

Missed this thread so posting a bit late.

Check your flywheel and clutch cover assembly weight, heavy is good for hard launches with sticky rubber on GTR's.

The mass assists reducing bog downs, stored energy for when you let the clutch out.

Lighter assemblies tend to head towards bogdowns.

[350_GT]

Slicks without using anti-lag/2-step/launch control on a slightly modified turbo car is pointless ESP on a RWD or 4WD car. Your car makes no power out of boost (well slightly less than a non-turbo equivalent of your motor.) Car is not making enough power out of boost to even challenge slicks

[XKLABA]

Depends on the car and what you consider "slightly modified"

My 32 would be considered slightly modified with simple bolt ons and with Toyo TQ drag radials I got a bit carried away with launch rpm and spun all 4 and nearly ran over the Christmas tree

[350_GT]

Depends on the car and what you consider "slightly modified"

My 32 would be considered slightly modified with simple bolt ons and with Toyo TQ drag radials I got a bit carried away with launch rpm and spun all 4 and nearly ran over the Christmas tree

Lol that might be driver mod my Evo 8 with 550whp would spin all "THREE" too, not entirely sure what setups come on the GT'rs whether they have true lsd's F/R or just Rear LSD and a gripper or open lsd in front.

Slightly modded might be upgraded ECU / boost levels etc, bolt-on turbo upgrade, 3" Downpipage/3" TBE could be a multitude of other parts, but i consider that to be "slight modification"

Also to OP: Dead-hooking will and can snap axles/shear hubs/diffs I snapped my stage 3 B5 Audi S4 axles launching it off 2-step (12lbs .9bar) at the track

Edited January 13, 2015 by 350_GT

[XKLABA]

I have what you listed except turbos, still stock, yeah 3 wheels would be a better way of saying it, true machanical LSD rear with open front, heavy rear sway bar helps front traction in straight line so mine will spin all four if launched to hard