Xr6 T Underpowered!

[ratter]

  JETFPV said:

Is the actuator a remove turbo job or can it be done on the car.?

It can be done in the car but it is fiddly

[JETFPV]

Ok spoke to the owner, he reckons the place that flashed it was AVO and the 3 tunes are stock, 8psi and 10 psi, so I flashed it back to stock, then took it for a drive I think an NA would be faster hahah tried the next tune went abit better and put the 10psi back and it feels a little better but still wouldnt be in the 20rwkw zone I wouldnt think but I will take it and have it re tested on same dyno to compare, if still nothing ive already bought some goodies such as bigger cooler and are drilling and flowing the injectors and will up the boost to 15psi and get my mates to do a full custom tune on it.

Might even do valve springs, remove centre muffler, punch cat and see how she goes then, nught break 220rwkw he he he.

[senna_T]

you will definately have to do valve springs - and don't go too crazy unless you plan on re-building the engine mate - 15psi can equal an engine destroying amount of power if not perfectly tuned!

[JETFPV]

  senna_T said:

you will definately have to do valve springs - and don't go too crazy unless you plan on re-building the engine mate - 15psi can equal an engine destroying amount of power if not perfectly tuned!

Yeah thanks senna_T, I am going to rebuild it later this year with steel rods, forgies, head and crank studs etc and do some turbo mods aswell along the way, hoping to run close to if not 20psi on the street reliably once completed and I have a gun tuner so it should go alright once finished, I know the auto probly wont last so ill be speaking to stan at preston diffs and autos if it sh*ts itself.

Hoping to get the MBC tomorrow so ill fit it up and see how it goes.

I fitted the factory airbox and filter assembly and its noticably more torquier down low and has better throttle responce down low also over the pod, might chase up a 2nd CAI and fit that with a new K&N aswell but for now ill just test it with nothing more than the MBC to see if there is a difference.

On the subject of valve springs, how much are they to buy, and also how much are they fitted.?

Cheers

Edited 29/01/08 08:22 AM by JETFPV

[JETFPV]

Ok update, fitted a new Rajab Racing Developments direct fit Garrett cooler and removed the centre muffler, also had a new custom 10psi tune by Rajab Racing and its now making 210rwkw on the same RRD dyno I got my first figures from, its peaking at 10.1psi and I have fitted a turbosmart MBC and instead of it dropping like it used to all the way back to 5.5-6psi it is sitting at about 7.8-8psi in the top end, we had to close the gaps on the plugs some more so I re-cleaned the throttlebody again, it feels strong on the street, but its farting a little at times under boost (sometimes even on quarter and half acceleration when boost builds), its not all the time but every now and again, Alan from Rajab has told me it's valve springs starting to play funny buggers and it should pick up more with a change to heavier springs and hold boost better.

Im not sure if its the dyno that's harsh or not and reading lowish figures as I had a run in with another auto XR6T flashed to 10psi which had 2nd CAI etc, which I havent got yet, im still running the factory genuine ford element and the factory airbox with no 2nd CAI, he claims he's is making 263rwkw on APS's dyno on 10psi.

Anyhow he was egging me on, on a private road obviously, and I wasnt to confident only making the lowish figures, in the end I thought ill see how I fare and to my surprise I was comfortably walking away from him even with passengers on board and without nearly 200kg of extra ballast on board I would have clearly shown him a clean pair of heels so its got me chuffed.

He told me he was making that power after that episode and was looking at me funny when I told him mine.

To show that was no fluke I also showed some clean heels to a new VE SS 6ltr auto ute by about 2-3 carlengths aswell.

Next stop, injectors and boost to about 12-15psi.

Stay tuned.

BTW do I just have to change valve springs or do I change collets retainers and all. ?

Do they come all in a kit to if that's the case.?

Edited 18/02/08 03:13 AM by JETFPV

[JETFPV]

Also 1 last question to all the guys with auto's with similar setups, what % are you calculating your driveline loss at and what gear are you guys dynoing them in.?

[our06t]

20% is a rough estimate on driveline power loss

4spd auto in 3rd

not sure on the 6spd think it's 4th

[JETFPV]

Yeah thanks mate, mine is 4spd auto and my dyno figures are takin in 3rd gear aswell (Always thought it was 3rd) but I have seen some figures on here are takin in 4th on 4spd auto's so I was wondering maybe that could be the reason for my lowish figures compared to some.

Ahwell not to worry.

Cheers

[jared87]

Hi im new to this and this is exactly the reason I joined. My 03 5 speed xr6t was flashed to 10 psi and only made 235 rwhp on generic tune. The tuner then put it back to factory and it only made 225 rwhp. I have replaced plugs, fuel filter spent hours going over everything for leaks, done compression test and everything was fine. Ive only had the car six months and I noticed a big drop in power one day before it was flashed so that gave me the urge to buy the flasher. Does anybody have any ideas?????? The car runs fine, revs out but just goes like an N/A. I fitted a boost gauge and it is making 10 psi at the inlet manifold sometimes up towards 11 or 12. HELP!!!!!!!!!!

[our06t]

try coil packs mine did a similar thing last time it was getting tuned went ok then sudden drop to 150 rwkw would go fine till boost came on then one of the coil packs would sh*t itself and the power just wasn't there

even if you just by one new one from ford get it on the dyno and swap each one for the new one till you get results

if you really want to be sure buy 6 of them from ford around $300 for 6 and change them all if that doesn't work I don't know what else to tell you ,but if the boost is there and you got no power this is probably the cause