XRS is slow

XRS is slow

Hey all,

I am new to the forum. I have just raced my XRS at the 1/4 mile track. Ran a brutal 16.332 at 89.63mph. Too bad the lift kicks in soo late, and falls waaay out of it between shifts. Has anyone come up with the mod to change this to a lower RPM?

Thanks.

hi zero10
did you take it to mission speedway? what was ur time?

id run over to matrixowners.com or newcelica.com , and search for techniques for staying in lift between shifts. it CAN be done, just need to do it right....

we dont have many 2zz powered cars over here yet, so not many will be able to answer your question.

Re: XRS is slow

First of all It's not like your mr2 it takes a little different technique in driving style. Second toyota designed the xrs for handling more so than flat out drag racing. To change lift you would have to crack the ecu, which nobody has yet look at the celica gts and matrix xrs cars nobody has hacked those ecus yet. It's easier to go buy a honda and use the vtec and run a piggyback ecu, it's a lot cheaper and readily available. Save the mr2 for drag racing you have more potential. Save your money and buy lower comp pistons and and ecu and custom turbo kit that's what I'm doing with my 2005 corolla xrs.

If you don't mind me asking, how did they go about changing the cam change over point.

dont forget that toyota tuned the engine a little for driveability in the city and such... its not gonna be as fast as a celica gts and its not gonna drive the same either. your probably gona have to shift hard to get the car to go fast and keep the rpms up in the lift range

I guess I nobody cracked the ecu so they used a stand alone. I believe the lift point in my car is 6200 redline is 8200. The way toyota set it up is perfect for daily driving because peak torque comes at 4400. The engine has imho 3 phases 0-4200 then 4200-6200, 6200-8200. The sound is awsome.

Thanks for your input all,

However, I do realize that this is not a drag car...neither is my MR2. But as my daily driver and winter beater car I expect the XRS to be as tuned as it can get. The lift kicks in at 6700RPM and I am very happy with the response. BUT... No matter how fast you shift it drops well over 1000RPM between gears out of lift. It is actually quite painful to wait for it to kick in again, and that is when I watch the damn HONDA drive away. At least the 2000 Celica GT-S lift kicked in at 6200 RPM and with a quick shift would stay in lift, now that is getting fast and worthy of mention.

My last car was an 03 Sport, upgraded with CAI and exhaust (in the power dep't anyways). The new XRS has more power overall and once you get the feel for the six speed, it is a great car to drive, handling, brakes, etc... you all know the differences. The cincher is the LIFT. I found the oil control valve that operates the lift and bypassed it to engage at 5000RPM. Well the computer said "I do not think so, and it went into limp mode" THe computer will not manage fuel and spark for the Lift to kick in at a lower RPM.

I was a part of the BCMR2004 Meet this year and dragged both my MR2 and Corolla side by side at Mission Raceways. This made me aware how the power is lagging.

My next step is to rig in an ECU from a Celica GT-S that had a lower LIFT point to the XRS. However, based on your responses I will seak out someone from the other site that may have altered the LIFT, would be so easy to just piggy back a little black box. I have been with Toyota for 14 years, I wish I had some more pull to have one of the Engineers rig me a special ECU. Apparently, TRD is working on a supercharger for the XRS, I will be anxiously awaiting. At least the engine will have something to do before the LIFT kicks in.

Yes, I am just a bit overcritical.

ehh.......16.3? that doesn't sound right. You sure its not "lack of driver" :?:

My stock S ran 16.1

yup, 16.33 but it was 30'C out at the time too, the launch was a .379 r/t and just drop the hammer from 3200RPM otherwise you get too much wheel spin. It is not so much the time as it is the characteristic of the engine and how it could be so much faster. A Corolla LE in Car and Driver ran a 16.1.

ints there some way to control Lift kinda like how honda drivers have a way to set when Vtec kicks in?

I ran a 15.897 in my car without the header/motor mount! Hmmmm... i also heard that the XRS Corolla is 1/4 mile @ 15.8.....hmmmm I think its lack of the driver

There are Matrix guys with nothing but intakes and exhausts running in the low 15's. Thats in a car that weighs about 2900 pounds. So figure the Rolla is a couple of hundred pounds lighter, even with a slightly lower power rating, you would think it would be a little quicker than 16.3.

I wouldn't sweat it too much though. The 2ZZ engine doesn't really start to loosen up till about 7-8K miles. Do you have that many miles on it yet? If not, give it some time.

Something else to keep in mind. Factory performance ratings are sometimes measured under the most ideal of situations with pro drivers. So times can vary quite a bit, depending on track conditions, air temp, tire grip, driver, ect.

BTW, does anyone here know if the gearing in the Rolla XRS is the same as the Trix XRS? Just curious.

you XRS guys are funny

Actually Matr6 had just an intake and unichip and ran a 15.1.

its a sad day when toyotas performace corolla gets outran by the economy version.

Its a bad idea to try and move the lift point. I know some of the celica guys tried it, and they found that the perfect crossover is at the factory set 6250 rpms. the big cam profile makes less power than the small cam profile before that point.


what you need to do is learn to land the 1-2 shift in lift. as scary as it sounds, and feels... you need to powershift 1-2. as in keep your accelerator to the floor and shift quickly. this will allow the clutch to slip for a slit second, and the car stays in lift. I wouldnt do this regualrly, but its ok to do the few times you run at the track.

good luck.

No matter how fast you shift the Corolla XRS, you fall out of lift. At least the Matrix and Celica lifted at 6200RPM, but the Corolla is at 6700RPM. THIS is my point with the Corolla.

6700!? thats gay. look around on newcelica.org i know somebody changed the lift engagement point

Yeah, the new Corolla XRS has a higher Lift point therefore making the 1-2 shift in Lift impossible no matter how fast you shift.

You would have to burn some serious clutch to land the 1-2 shift in Lift in the Rolla XRS :?

Aren't you glad that you have one of the fastest XRS's out there rtrac?

You don't want to be dragging that motor untill after 5,000 miles isn't it? or is it 1,000? I cared for my motor the first 1,000 miles like it was my baby brother.

This makes me want to trade in my 03 S and buy an XRS! Actually, I have heard this from a number of sources and that is why I will stick with the 1ZZ s/c.

You BETTER stick with the 1zz S/C or ELSE! :twisted:

At this point in time the corolla xrs is the better value over the s, you get more bang for your buck. if your going to buy a corolla. If you already own a s then you just have to dump more money into yours in the long run it all comes out the same.

Any XRS Corolla out there for a little friendly challenge?? How about accelceration and handling??? Then you can tell me which Corolla is a better value.

so does the Corolla XRS have a speed limiter like the others or no??

I will find out as soon as I break in my engine.

I guess its more bang for your buck... if you want to spent a few thousand on 1 foot pound of torque more than the S :roll:

I will agree, the 6 speed and 4 disc brakes are pretty nice... but im all about this supercharger! bring that XRS over here :twisted: