Who Has A Auto With Engine Mods.

[geea]

Owna, have you had the valve body replaced in the auto yet ? I have a flaring problem between 2-3 when flat out at about 140kmph, I showed the service guys. He said it was the valve body and that ford have a revised one and that he will fit it. (when I get it back from the panel shop).

When I finally get it done I'll post the results.

Geea.

[aps]

Remember, when you trick the management computers load signals...which it also relies on for calculated base pressure versus torque on the auto force motor...you are also tricking the transmission. You may have to wait until the computer is cracked properly to make the transmission last.

Reminds me of when all the LS1 guys put ported MAF meters or piggybacked the MAF signal on their cars before the computer was cracked, and nearly every single auto car blew the trans. Why? The computer was seeing less load through the modified MAF, the engine making more power, and the transmission backing off pressure. Slip, slop, slap....cook. No amount of transmission building fixed these cars, just delayed the inevitable at a big cost.

Welcome to yesterday....and...enjoy

Hi Martin,

I don’t believe the trans problem is anything to do with altering ignition or fuel maps, it’s simply a case that the auto trans is struggling to cope with a much higher torque level. Obviously the line pressure needs to be increased electronically or through modification to the valve body in order to speed up gearshifts. This applies also to an auto trans which has mechanical mechanism for gear shifts (C4 type trans) if you increase torque by 30-50% the box will flair between gear changes, extensive mod’s to the auto box are required to transmit very high torque levels. We are in the process of developing auto trans upgrades for the XR6 T auto, it just takes time to come up with a practical, reliable and cost effective solution. The auto box behind the LS1 is not that flash, so I am not at all surprised that it struggles to cope with higher torque, particularly in the low RPM (Eg Blower installations). As the standard LS1 doesn’t generate high torque until approx.4,000 RPM stock.

Peter

APS

[Street Tuner]

Agreed Peter, the old 4L60E was a POS, and the new 4L65E only slightly better. Sure the problem with the XR is the torque generated, mine used to make the T5 sound like a mince grinder when it hit full boost. Finding a solution to the gearbox problem will be an interesting engineering exercise for you, as we found with the 4L60E theres only so many clutch plates, and so much pump pressure you can run in the things. Still, if anyone can do it, you guys will.

Isnt it funny though how now it looks like the manual is the more durable of the pair.....

[Cobra]

Isnt it funny though how now it looks like the manual is the more durable of the pair.....

maybe it is just that the autos are the squeaky wheel at the moment

[PASHEN]

My Phantom XR6T is an auto, I have 19" wheels, 245 front rubber, 265's at the rear, and lowered springs. I have had the APS Phase 2 kit for over a month now. Its pumping out over 260 rwkw at the moment. I drive my XR6T pretty hard, so far no problems with the trans. I must admit, however, that I've been conscious not to push the limits everytime I drive.

Peter Luxon at APS spent the best part of half his day with me discussing how I intend to eventually get my car to sub 11's. He stressed that in his opinion the biggest weakness or unknown factor is the auto. I will definately be upgarding my auto trans before adding more power. In the meantime, I'll be resisting the urge to nail full throttle everytime I drive even with my current Phase II set-up...as much of an adreneline rush it is...everytime, trust me. 560MN of torque means you just have to tread carefully until the auto is upgraded.

Am I happy with the APS Phase II? Hell yeah...every person that's been in the car is blown away. They liken the acceleration to the feeling in a jet just before take-off. I've done 2 runs at 12.86 and 12.91...and still running it in.

I'm not a dragster showoff, but have had a few tryhards wanting to embarass me on the road. All have failed including a CSV Mondo (left him 5 cars behind before I got to 120km), a HSV GTS (even further behind), a tuned Honda NSX (it was close...for about 5 seconds), and only yesterday a Porsche Carrera 911 (sh*t those things are overrated)

I'll keep you all posted on further developments on my car as they happen, including the effect on the auto when I upgrade it over the next month and go up to 350 rwkw. In the meantime, I suggest everyone with a modded auto go easy until you've beefed it up.....its only logical.

Dave

p.s I used to be a HSV nut...but damn do these XR6T's kick arse. If you don't have one - get one...you'll see what I mean.

[OwnaXR6T]

Owna, have you had the valve body replaced in the auto yet ? I have a flaring problem between 2-3 when flat out at about 140kmph, I showed the service guys. He said it was the valve body and that ford have a revised one and that he will fit it. (when I get it back from the panel shop).

When I finally get it done I'll post the results.

Geea.

I thought my valve body would have been looked at when the gear box was rebuilt befor christmas. im told the new valve body is around 2 grand I will look at this once ive heard that your flare problem is fixed by this. my wallet is really hurting with chrismass and a 5 grand bill for the gearbox so im fully stressing out about this. ford wont look at my cart due to mods being done. im driving like a grandpa in the meantime.

Id love to know why its only 2nd to 3rd gear changes that are flareing.

wouldnt the extra power cause my car to fare in all gear changes

my car goes back to c and v tommorrow will be interesting to see what their auto guy says about this.

[hypnodoc]

my car goes back to c and v tommorrow will be interesting to see what their auto guy says about this.

Owna, you must be spewing, and your selling dealer must be a mongrel. Have you thought about disconnecting the unichip and trying another dealer for warranty, or is it too late for that?

[Adam]

This is true! I was recently told of a guy who blew a diff and stuffed an input shaft or something like that, and a guy from FOMOCO, not a dealer denied the warranty claim...why....he had removed the centre muffler! HOW HARSH IS THAT!!! It's not even a big performance enhancing mod or related to the parts in question.

[Guest Ahiles]

Hi XR6_Turbo_Phase II

Can you please anwser a few questions for me.

How are you finding the Phase II upgrade?

Is the idle better after the upgrade ( Smoother ) ?

Have you noticed any oil consumption due to the increase in power ?

Would you recommend the upgrade?

Are you happy with the power increase and have you had any problems after the upgrade.

Cheers

[OwnaXR6T]

hypnodoc I think its probably to late for me to take my unichip off. and if I did take my unichip off id also have to remove all the other components( injectors and fuel pump etc) otherwise the standard comp wouldnt know what to do I suspect. I would have removed the lot if I knew how much it would cost to repair. if your in newcastle and you want to know what dealer mistreated me pm me and ill be very happy to tell u!!! it was horible really ive explained the full story in another post( auto problems I think its called) im not allowed to name the dealer so pm me if u would like to know. to think I was going to send my business partner there for a new territory.

anyway Ahiles the phase two kit is very worth while, no oil consumption, the idle isnt better but isnt worse(dont know why it would be better)but as u can see with any mods budget for drivline upgrades or u will be very sorry.