A couple months back I went to the track. I ran 5 times, everywhere between a 17.x (spun first, missed 2nd, then bogged) and 14.9 with these mods:
-cattman headers and catback
-test pipe
-00VI (vq40 injectors and NO tune = rich)
-Fidanza flywheel and 4 puck clutch
-Motostorm UDP
-4th gen airbox and OEM filter with ebay midpipe.
-eibachs on illuminas set to 5
-wheel/tire = 255/40-17 T1Ron 17x9 (5lbs heavier than stock (26psi))


A couple thoughts about that night:
-track temp about 35* + stock motor mounts = wheelhop out the A$$
-stock airbox felt restrictive to 00VI at upper rpms
-i ran a 15.9 after simply avoiding the waterbox, then 15 minutes later I ran a 14.9 after doing a nice burnout. (I'll find 60ft times) I see people saying don't to burnouts on street tires....but why did I run a better time then? Maybe it won't be as beneficial when the track is 100*, not 35*?
-crossing the line at 6500, but haven't tapped the limiter yet. should I shift to 4th a little before the line?
-****ty pro tree makes my reaction times like .5-.7 seconds...need to get used to it and launch on yellow...
-need better 60' times, most were around 2.4-2.5....how should I launch?!


I'll be going back to the track in about 1.5 weeks with these mods:
-cattman headers and catback
-test pipe
-00VI (V-ACFII tuned to 13-13.5 AFR (no longer 11-12.5))
-Fidanza flywheel and 4 puck clutch
-Motostorm UDP
-custom STS
-Z33 intake tube - K&N behind headlight with headlight removed
-ES poly motor mounts. (should I throw the traction bars on too?)
-eibachs on illuminas set to 5 (rubber blocks in the back, lots of zip ties in the front)
-225/45-17 kdw2's on 17x7 (stock weight (20psi?))
-110+lbs lighter (no sub(40), light battery(30), wheels(10-rotational), back seat(?), no floormats, gutted trunk)


What do you guys think, should I expect to be quite a bit quicker this time?! I sure freeking hope so....

also, my only real problem is LAUNCHING....any tips?
Is it better to get the clutch out, not spin and ease into it?
Or would it be better to get the clutch out quick, get off the line, and let it spin a little?
I was worried about the tires breaking loose and me just sitting there...but I don't think that would happen...especially now that the track will be hot.
I currently launch at about 2k and try to slip it to avoid breaking loose, but the clutch is almost just on/off. hopefully I'll just break loose a little and NOT hop this time...I wanna be able to keep my foot in it and not break something.

I REALLY want to get into the 13's NA...only mods I'll be doing soon are PF TB, vq35 cams, and maybe a bigger MAF housing...can I break into 13's this summer?!

I will go EU for timing control and extended rev limit, but that's not till NEXT summer

 

Well ima tell you this one here, without a dyno you trully dont know where to shift at. With a 00vi you shiould still eb making power up top but that doesnt mean you are. U say you arent tuned well that can play a huge factor into why your car isnt running the way you think it is. A tune is the number one most important thing you can do to your car. Tune and return and youll see a difference.

 

on street tires I leave at 2k rpms riding the clutch, so as I feel the car starting to spin or hold I would press the clutch alittle and I would get 2.160fts all day. but then I took a 1/4inch peice of metal drilled 2 holes and connected the bottom and top bolts on the front engine mount to make it solid at the track and now I have no more wheelhop problems. and I can launch alittle harder.

I think with your mods you should in the low 14's easy if not high 13's n/a just by bringing down your 60ft

to give you something to compare to I ran a 14.3 with a 2.160ft with a y-pipe, cutout, mevi, short ram intake, full interior no sprare or jack

btw with my a/f at in the low 12's after 5k rpms

 

+1

 

so you guys think that launching better and the fact that I'm now tuned will make a pretty big difference eh? That's what i was hoping for.

with the hotter track and poly mounts, I should have less trouble launching...and I could definitely feel a difference after tuning it, so hopefully that helped out a bunch too.

what about shifting into 4th? should I, or should I hold 3rd and see if I hit the limiter? and burnouts...should I bother?

 

As stated dyno to find out if you are making power or not. If you arent making power why hold your revs? Its a waste of time . U need to find your power band and go from there .

 

I wasn't really thinking in terms of power, (as I'm confident I should be making almost peak power at redline) but rather, my trap speed. Basically, if I trap any higher than I did on the 14.9, I'll have to shift. So will getting a better 60' time make me trap higher or lower?

I don't really know why I'm asking though...I guess I just need to try and see.

But yeah, I do need to dyno soon...for more than one reason.

 

As for the shifting in the 4th thing. If your right at the end of the 1/4 mile and you can get away with not shifting without hitting the rev-limiter I would say do it because making that extra shift at the end of the track will cost you a lil time, just my .02 And getting a better 60ft will lower your trap speed a little bit.

 

Well a better 60 doesnt mean a higher trap. You can have a lower e/t and lower trap than before if yiour 60ft impoves. Take and evo they run 13's at times but most dont trap but 96. There 60 makes up for a lot. Or me i trap 110 or so but im only running 13's

 

60ft is where its all at, the rest will take cars of itself. And you cant expect to go out there and be perfect, it takes alot of practice and knowing your car to get it to do what you want it to. 110mph trap and still in the 13's, man I'm in the same boat as you.

 

stay in 3rd, shifting into 4th will hurt your times, depending on your tire size 3rd should be good till around 100mph

 

Thankyou sir I was doubting my previous post but I was pretty sure from hanging out with xlcrew, and he has the same issue with the shifting at the end of the track.

 

basically, at a given e/t, a lower 60' = a lower trap speed. right?

so if I can improve my 60', even if my e/t gets faster, I could still trap the same.

 

^^ thanks guys for the input. I'm hoping that if I can improve the 60' I won't have to shift, even when my e/t improves. Although...I think I'll tap the limiter somewhere between 94-96 (I need to dig up timeslips). Pretty sure I won't be able to hit 97+ in 3rd BTW, my tires are VERY close to stock size IIRC.

 

Extending your redline will also help. I'd consider it as a future mod.

 

Well im damn near 120 trap and 13.2 is my best e/t. Sucks i know.

 

That is very true with a mevi or 00vi.

 

That is part of the plan for NEXT summer. EU, JWT knockoff cams with HR springs, vq35 oil pump, and who knows what else...

 

Sounds like a good plan. Those mods will def wake the car up!

 

yeah, it just sucks that I have to wait that long...but o well. It'll be nice once it's done. I'm curious how big of a difference it will make. Actually, I'm really curious if the stock vq35 cams will make a difference. Those will be going in sometime soon..

 

it's hard to give specific advice without having a clue what your timeslip looks like, but yes you should be running way quicker than that pretty much without question.

 

Sweet! Keep us updated with the cam install and your next time out to the track as well.

 

sorry I was trying not to comment but ^ smells like BS I mean your car got 10mph faster in a few hours

but back to the thread whats your tire size, plus remember most 4gen tachs are a few hundred rpms off.

btw please post your timeslip this would help alot

 

he could of turned up his boost and got some better tires and that would be easily possible....not bs..

 

don't worry guys...timeslips are coming. I just have to dig them up when I get home tonigh.

 

my best trap is 96 mph and thats banging the rev limiter at or near the finish...(hard to really tell where you are relative to the actual finish line). im running 225/40/17 i believe. my best time is 14.7 with less mods than you have, so yes, i would say you *should* run quicker. i normally launch around 4k slipping the clutch, but my 60 foots are horrible also (~2.3 average) so im not the best person to listen to on that aspect.
my tach reads over 7k rpms as im passing the line so dont believe what the tach reads. like someone said its off by a bit, so id say you have a little bit more to go.

 

What are your trap speeds? If they are in the mid 90s, high 14s is about right. Better 60' should get you to around 14.6 or so.

 

i wouldnt plan any more mods until that thing is in the 13s dude.

 

Few hours? Where have you been? I have a larger turbo,maf,mevi,and injectors. So how was this a few hours? Please explain.

 

holy crap. I forgot about this

I did manage to dig up the timeslips though...so I'll take pics and get them up here ASAP.

BTW, I didn't make it to the track when I said I was gonna. I already had tickets to a concert and didn't realize they were the same night! Oh well, that just gives me more time to get everything straightened out before my next track visit!

 

You wan't 13's ASAP? Reflash the ECU w/ extended rev limit to support the VI... You never said anything about not buying any more NA mods.

 

bro do u even know brians setup?