F/I Horsepower and Supporting Mods

[Amo-cat3]

Just get the 640cc and the supplemental injector for supercharger cooling. You will have plenty of head room with that combination.

G

For a daily driver/non racer should the 7th injector be sufficient?

 

[Gadget]

Should be just fine.

G

 

[Hard Taco]

I thought the X was atleast 300hp stock w the s/c

 

[wolfpack_5150]

Throw the 2.85 pulley on it for cheap HP. Mine added 3psi

:biggrin: how?

3lbs?!

u sure?!

holy crap

 

[lamia2super]

So what's the record dyno for a trd s/c ? So I know what to beat when I go to the dyno lol

 

[Torspd]

Around 387 whp or so. ABP is the one who holds that record I believe.

 

[lamia2super]

Around 360 whp or so. ABP is the one who holds that record I believe.

thats it ? how about nitrous/meth spraying etc....i was expecting 400+whp

 

[Torspd]

His was just a tune on E85. I am pretty sure that his dyno chart is in this thread.

 

[5H4D0WD347H]

I had a 375 HP baseline on TRD before spray (93 pump gas); not sure if its the highest though - I thought there was someone else in/around there.

http://www.xr-underground.com/forum/showpost.php?p=887382&postcount=65

 

[lamia2super]

I had a 375 HP baseline on TRD before spray (93 pump gas); not sure if its the highest though - I thought there was someone else in/around there.

http://www.xr-underground.com/forum/showpost.php?p=887382&postcount=65

cool i need to put mine on the dyno to see if this stiegemeier is worth anything. so far i like how responsive it is but it needed a little spray to wake it up some. A/F ratios is a constant 10.2-10.5 which i think is safe to put a slightly bigger jet

 

[5H4D0WD347H]

Everything needs a little spray haha. :rockon:

 

[TRDreams]

10.2 is VERY rich

 

[Torspd]

And here it is....I was guessing 375....but.....



353.11hp and 357.09Torque, this run was on a dynojet with SAE correction.

URD MK3 with 75 pulley.
URD MK2 exhaust
Doug Thorley gen 1 long tube
Stock Y
URD fuel pump upgrade
UCON with stage1 map loaded

I was scared for a moment...smelt some burnt clutch and I thought I blew my motor. This was run 3. They didn't run with the O2 sensor on run 1 and 2, so I told them to hook it up so I know I am running safe.

They said they ran another blue XR in 2005 and compared it to my dyno. So you can see the improvement. Tuner said he remember URD intake and exhaust, not sure of anything else as in mafcal or not. But here is the comparasion.



Numbers are on the bottom. Sorry for my noobness. Trying to figure out how to link it here. Tuner was impressed by the way on the gains on the other X. Same year in 2005.

SooRunner's. -81 Blower.

 

[SooRunner]

:top:.............

 

[shane881510]

438hp 382tq
Urd mrk3 15psi 70mm pulley, stage three tune. 800cc injectors. C38 -81 blower.
Jba long tube headers.
Custom 2.5" equal length y pipe.
3" mid pipe small 3" muffler spilt out 2.5" dual axel back.

 

[Torspd]

Thank you Shane. :top:

 

[Gadget]

URD Stage 4 (Rotrex C38-91 w/80mm pulley) about 10 PSI

Built engine with BC Stroker rotating assembly 10:1 CR.
Ported heads, larger valves, stiffer springs.
Darton Mid Sleeve Kit.
Stock Cams
93 Octane Shell Pump Gas.

 

[TRON]

Hey Gadget, is that engine in your xrunner? It's great you can push the redline just shy of 7000 now that the modified internals are in. How many more ponies you think the engine can take? Nice job!!

 

[Gadget]

Going to see if we can break 600 with race gas and a smaller pulley.

Should be able to spin to 8000+ with the valve springs and rotating assembly, but not sure about the belt drive.

G

 

[Redlantern]

Damn that's bad ass. Would love to see a video of that dyno.