Colin,
Juan's been away on business and told us to hold his v2 ECU/TCU until he arrives on Wed/Thurs of this week.

Thanks
Andy

 

ToothDoc,

Mike's Tundra is the heaviest possible. It is a bone stock QMSB (leather interior, sun roof, DVDs in the back of the front seat headrests, etc) with about 30,000 miles on it. The people on one of the Tundra sites is keeping track of the various 1/4 and 1/8 mile times and speeds. As you stated they show the RCSB with cat-backs, etc turning in the very low 14's. One guy this last weekend broke into the 13's with two 13.98s.

The QMSBs that have recorded times are in the 14.59 - 14.65 times. Quite respectable. Hopefully (weather permitting) we will see what his with the MHP v1 Tune will do this comming weekend.

Since you have been reading their forum you undoubtedly gleaned what I have and that Toyota had been having major problems with their tune of the supercharged units, especially when the temperatures fall below about 50-55 deg F. At that point the traction control takes over and limits the rpm of the engine to about 4,000 and the transmission hangs up because of what appears to be a miscommunication between the ECM (telling the engine what to do) and the TCM (telling the tranny what to do).

Toyota has known of this problems for months (though it appears that they did not tell owners that other owners were having similar problems). They were susposed to have a reflash available by the end of last year, but now it appears that it will be sometimes in Feb. before they come out with the new flash.

I have no personnal knowledge of these problems only what the owners on the Tundra Truck boards are saying.

Pat

 

Hey guys, I'm back at home waiting for the ECU so I can install it back. Now that we are talking about the Tundra, when I went to PBIR to have my 1/4 mile times (before the ECM upgrade) I did one pass only, it was against a 5.7L Tundra, and according to the owner it was stock (didn't hear any supercharger). His time was:

1/4 Mile ET: 13.573
1/4 Mile MPH: 99.81
1/8 Mile ET: 8.679
1/8 Mile MPH: 8.679
0-60 Foot ET: 1.946

I was impressed with his time, such a big truck ran mid 13's!

Back to my car, I'll be posting new dyno numbers early next week when I get another 200 miles on the v2.

 

Juanca,

To run those times he had to be running either the TRD supercharger or N2O. The fastest RCSB (Regular Cab Short Bed - the lightest) are running right at 14.0.

Yeah, those big Tundras really haul axx. Back in '87 I had a Trans Am GTA and it ran about the same at those trucks are running now. It was much lighter than my sons QMSB. I think that I posted his dyno numbers back when I posted my base numbers. His truck dyno'd 325 rwhp @ 330 rwtq in stock condition.

Pat

 

Gotta agree with Pat, definitely not stock. I've been following tundrasolutions since the new tundra came out (there are a LOT of guys there, difficult to keep track of all the posts!) and 13.5 is NOT stock. 14.0, but not 13.5

 

Has there been any tuning on an IS250 Yet?

 

He may have been stock but under the perfect track conditions with a near perfect launch. He's trapping 1mph faster than I did when I ran 13.924 but his '60 1.94 compared to my 2.14 which explains the better 1/4 mile ET. Wow with just the MHP tune he might hit low 13s N/A!!! That's awesome, man I can't wait to see what v2 does for your IS-F! I'll be lurking around lol

 

Pat, I've read at tundrasolutions that you're hoping for 12.2s and 116, but honestly, I'm not sure that's gonna happen. I'm not trying to bash the tune but I don't want you to be disappointed when you run a tuned IS-F just to find out that you run 12.4 or 12.5. First off, I ran at -700 DA and caymandive was around -1700 DA which is HUGE. In addition, I'm running 40 lbs worth of lighter wheels all around. Also, the C63 is severely detuned at the factory so gaining 60-70 hp is easy while for us, gaining 25-30 is about it. Also, my 12.4 run is after doing several DOZENS of runs and it is statistically an outlier so if I had to repeat it, I probably couldn't unless I had like 100 tries. LOL. So, instead of thinking 12.2@116 and being let down, I'm thinking more realistically 12.5@114 (at 0 DA). Most IS-Fs are 12.8 stock under average conditions.

 

Welcome back, Juan....We look forward to the next part of testing....

C.

 

ToothDoc

Probably unrealistic to hope for 12.2 or 12.3 but I can dream can't I. I'll be happpy if I go 12.4. Hopefully, since we will have the track to ourselves, I can make 10-12 passes during the day (weather permitting). That should help consistency.

I expect the first couple passes to "suck" since this will be the first time I've run the 1/4 mile in 10 years.

I have already offered Peter (HoustonT) my car to make some passes also. I want to see what it will do.

Pat

 

Best of luck Saturday, FPR.....with that many passes, you're bound to get a few good ones.

Let's hope for decent weather Saturday.....

G/L
Colin

 

Pat, what time are you going to head out to the track on the 24th? Maybe we can caravan out together?
Peter

 

Peter,

We will be traveling from Clear Lake/Friendswood area so probably would make sense to travel together. I have PM'd Andy asking what time we need to be there. Will PM you.

Pat

 

Don't get me wrong, I REALLY want to see an IS-F in the 11s as much as anybody else. I know you guys know how to drag race, but if I may, let me give a couple of little things that I've noticed really help and just to reiterate and to maybe allow others who might not know learn.

DEFINITELY do a burn out. When i say burn out, I'm talking a 60mph burn out (2nd gear)Gives better traction and lower 60' times. My best 60' is 1.90x so far. For some odd reason, for both my IS-F and IS350, hot lapping actually gave better results than letting it sit. I did runs every 5 minutes continuously to get the 12.4 and the 13.2 in my IS350. I've done about 40 runs brake torqueing and 40 runs just mashing the gas and notice no difference statistically. Also, some guys actually don't know anything about short-staging so make sure you stage as SHORT as possible. Last but not least, don't shift as soon as you hear the beep to shift, let the engine max out to the fuel cutoff. Even with the stock ECU, I routinely shifted at closer to 7,000 rpm (even though redline is 6800). I don't know, but my FASTEST trap was actually with me bouncing off the rev limiter in 1st, 2nd, and 3rd! These little things probably helped me take off about 2/10s off my 1/4. The last thing is choosing the right day (LOW DA) and running as little weight as possible. Remove spare, jack, engine cover. I didn't go as far, but you can even remove floormats, drain windshield fluid, use lighter battery, use the lightest tires possible, etc. I ran my 12.4 with "0 miles to empty". If I had weighed as little as my wife, I'd probably run 12.4. I hope Houston T is a skinny guy.

 

ToothDoc,

Thanks for the advice. Hopefully we will be able to try enough different approaches so that we can minimize time and maximize trap speed. Since its been years since I spend any time at the track I will probably take a few runs to get into the swing of things. Hopefully with Peter and Andy there I can get my act together. If not, I know that they will be able to.

It's going to be fun lining up against someone I know's Tundra truck and then blowing him away (no father/son competition in our family - LOL).

This is fun.

Pat