RL1

very cool. what tire pressure are you running?

can you do gopro vids on the next one? pics?

RL

xtyper

Yes, I will definitely invest in a Go-Pro for future events.

As for tire pressure, I ran 48psi up front on the stock Contis and 30psi in the back on the Nitto 555Rs. Next time I will try a bit lower in the back.

mthis

Send U a pm for this reply

BerBer63

I had same issue in 1-2 only, but wasn't less than a 1/4 gas. I thought it was the trans slipping, im curious to know what mthis thought

PetroC63

NT555R's should be set to 20 psi maximum from the get go. 30 psi is too high and pressure increases when tires become hot. I wouldn't be surprised if you were actually at 32 psi after a run or two. Definitely hurt your 60' times.

mthis

Nothing much realy
Just thought it was due to the trans being use to driving normal and when u go to the track the 1st 5-6 runs are just to adapt to the track

BerBer63

yea thats what my guess would be too....trans slippage

mthis

Not slippage just not use to being shifted like that, once u get runs in the trans learns but u have to teach it wher to shift,
If u in S even tho it shifts it self u can still shift before it try to shift it self and there will be no delay, keep doing that and after a few run the trans learns and u good to go.

C63newdude

I ran my Nitto 555R 46 times in the last 2 trips to the track(21 and 25 passes), I tried anywhere from 18psi to 30-32PSI and my best times were close to 30PSI.

I think that the most significant fact here is how to launch the car. When I ran my car with low PSI I use to lose a couple of MPH. I guess that it doesn't work for everyone.

I only cut a best of a high 1.9 sec EVER with my brand new Nitto 555R (street drag radial) just a couple of times. My averages are 2.0 sec 60' with these tires. I wish I could see a solid low 1.9 sec or even a 1.8 sec 60'.

bhamg

Thanks. The point I was trying to make is that regardless of the cat/no cat setup of the other car the respective dyno charts looked to be virtually identical. Your session provided the best evidence to date that there is no difference whatsoever in low-end output/torque between these header designs on the C63.

jrcart

11.5's are not that bad for Famoso. Back in the day, Pre-Supercharge I was running 11.0's on a 100 shot and 11.25's NA at Famoso. Keep in mind I was tuned for race fuel and was running with no cats on MT Street ETs and putting down 1.6x 60's. knock his 60ft down to a 1.6x and do the math and he's running high 11.1x's.

hotrod182

Did you dyno at the same place as Eric in the Valley?

Same track, same day, Eric was trapping faster than the 11.0x second 2012 GTR.. Does anyone know what 2012 GTR can trap at when run at a fast track in ideal conditions? Don't they trap faster than 121mph?

4ramin

let me give you the facts, on our 1st dyno run I was running 100 cell cats with no xpipe,
Eric's -Xtypers car had no cat's With xpipe,

Since last run, I went back to the same dyno and removed my cats and installed my xpipe to see apples to apples what the results would be and wow what a difference..... 509 RWHP & 476 RWtQ.

As you can see that you are wrong and the difference is huge.....

4ramin

both times in orange county , the same place Eric and I both went to when he posted his results with mine at the same day run after run... yes . It was not the valley

hotrod182

Okay, I looked up dragtimes for stock 2012 GTRs. racerx is one of the quickest I found listed a 11.04 at 122mph. The guy knows his car, and knows how to drive. He came from a 335i and M3 all of which he took to the drag strip also. Just about every other stock 2012 GTR at other tracks were trapping 124-125mph on dragtimes. So Erics C63 at a FAST track would probably be in the same 124-125mph range, and then with a quick 60' time, and weight reduction, then his runs would be right up there on the list.

Staff@RPM

I never had any luck racing my car at any California tracks. I have raced at Pomona, Bakersfield, Irwindale (RIP), Palmdale and a track that was set up in the parking lot of a Nascar track in Ontario I think. I could set a record on the east coast, be on the west coast the next week, and my car would never perform. It used to frustrate me so much. The fastest I ever went out there was in that damn parking lot (with painted parking spot lines all the way down the track). I almost killed myself at the finish line of Irwindale when it gets narrow at the end (dumbest design ever).

As far as I am concerned, we are lucky when it comes to drag strips on the east coast. First of all, we have so many of them and second of all, they seem to be faster. If you live in LA, good luck finding a drag strip. Pomona is only open a few times a year and everything else is really far away and not that nice.

If you need a GoPro, let me know, we keep them in stock.

dodger63

What do you know about drag racing?

Nachtsturm

OP, nice times.


Hot rod, I am curious what do you have done to have that 335i trap over 130?

Staff@RPM

Nothing really.