wondering y are engine's arent given us numbers like other twin 6's

[explorergotoluvit]

wether is runs 12.99 or not that hp really isn't increased like some of the v6's. that have every little mods like say the xts. that is getting almost 100 more hp gain with just a tuner and stage one for that matter. that 12's that your talking about it with exhaust and stage 4+?

There are tune only cars running in the 12's.

335i makes 300/300 from the factory, what was your point of comparison?

stock a 335 can do a 13.4 so im guessing with a tune it can get into the 12.99 range and with just a tune ive seen close to 100 gain on 135i out of there motors... im not asking about whos motor can do that fastest 14 mile

I AM LOOKING FOR HORSEPOWER GAIN WITH OUT HAVING TO DO ALOT OF MODS and was asking why are motor have a hard time getting there with out lots of bolt ons and i have gotten my answer thanks everyone

[SoCalSHO]

Just buy a new BMW or XTS and tune them. Since you want to add another car anyways.

[explorergotoluvit]

XTS-V out of my price range and bmw would be to

[SwampRat]

Just buy a new BMW or XTS and tune them. Since you want to add another car anyways.

[

[yowen]

In my opinion our cars gain monster-horsepower for just a tune.

Also 100hp our of a tune for a 335i with only a tune? No way!
http://www.1addicts.com/forums/showthread.php?t=740838

[EcoPowerParts]

You can easily add 100HP on our cars but it requires tune, 3 bar map, downpipes and meth injection currently. HUGE difference from stock with those things added.
Long term if you want BIG power you can add upgraded turbos and upgraded fuel system and get to 500HP or more depending on if you want aux injectors or not.
How fast do you want to go and the key is how much can the transmission on the X-sport take? My Flex tranny didn't like 600WHP much (torque really).
The path I made is repeatable and so will the headaches at the top end of the power range. I suggest you shoot for around 500WHP, plenty of power for your X to run mid 12's consistently.

One thing to consider is that you have a ton more room at the backside of the motor, have someone make custom manifolds/piping and go big single where the stock airbox is, upgrade the intercooler and do the aux injector scenario. I would suggest you forge the bottom end as well.
Probably get to 1K HP pretty easily but again, transmission won't take the abuse.

[TSS]

I have driven, at length, the new XTS-V Sport, as I was considering one.   The V-Sport is no V!   I am not a hater and feel the XTS is superior in just about every way to my MKS EXCEPT engine/tranny.   Either I drove a dog or GM overstated the 420 HP in the beginning.  It just wasn't that fast and felt very similar (a little slower) than my MKS ECO WITHOUT the tune.  With my tune the V-Sport is not in the same league.   Can't speak to a V-Sport with a tune.   The V- Sport was very disappointing by comparison even though "out of the box" it is reported to have a 55 HP advantage.   SO if there was a 100 HP gain with a tune on the XTS - I would be really interested in what the real beginning HP numbers and ending were.  Again, The one I drove could have been atypical, but I was not impressed.

[yowen]

Here are some numbers I found on a cadillac message board:


HP Gains:

~80 Midrange AWHP (3100 – 5000 RPMS)
~51 Peak AWHP

TQ Gains:

~100 Midrange AWTQ

~120 Peak TQ

[3POINT5]

Glad you guys finished this off for me. Im still not sure what the O.P. was getting at but I do know the SHO with verry minor bolt ons holds its own with some very fast cars. He is basing his opinion off the X SPORT and thats fine but he really needs to drive a tuned SHO to get the point.

[Joleat]

One important thing to add is that it just isn't about raw HP/TQ numbers. I'm not comparing the 3.5EB against the Caddy (mainly because I haven't looked at dyno sheets for the Caddy) when I say this, but the curve at which the power is made is just as important as maximum output. Two cars that have similar peak HP/TQ can feel drastically different depending on where the power is made.

[BiGMaC]

One important thing to add is that it just isn't about raw HP/TQ numbers. I'm not comparing the 3.5EB against the Caddy (mainly because I haven't looked at dyno sheets for the Caddy) when I say this, but the curve at which the power is made is just as important as maximum output. Two cars that have similar peak HP/TQ can feel drastically different depending on where the power is made.

Very True!
Also, it is hard to compare crank HP from car to car when they are reasonably close because CHP does not translate equally to WHP in different cars.... hence the test drive!

[EcoPowerParts]

I have driven, at length, the new XTS-V Sport, as I was considering one.   The V-Sport is no V!   I am not a hater and feel the XTS is superior in just about every way to my MKS EXCEPT engine/tranny.   Either I drove a dog or GM overstated the 420 HP in the beginning.  It just wasn't that fast and felt very similar (a little slower) than my MKS ECO WITHOUT the tune.  With my tune the V-Sport is not in the same league.   Can't speak to a V-Sport with a tune.   The V- Sport was very disappointing by comparison even though "out of the box" it is reported to have a 55 HP advantage.   SO if there was a 100 HP gain with a tune on the XTS - I would be really interested in what the real beginning HP numbers and ending were.  Again, The one I drove could have been atypical, but I was not impressed.

I drove the CTS V-sport at Barrett Jackson on a closed course, with all nannies on it severely limited the output of the V6 BUT multiple magazines have tested it at 12.5@115 stock which is much faster than the SHO magazine time. With a tune to tune comparison I would guess the V-sport will break into the 11's easily, time will tell.

[yowen]

Does someone happen to know how the XTS's AWD system compares to an SHO?

[crash712us]

Here is car and drivers specs in xts-v

C/D TEST RESULTS:
Zero to 60 mph: 5.2 sec
Zero to 100 mph: 12.4 sec
Zero to 130 mph: 23.3 sec
Rolling start, 5-60 mph: 5.6 sec
Top gear, 30-50 mph: 2.9 sec
Top gear, 50-70 mph: 3.7 sec
Standing ¼-mile: 13.6 sec @ 105 mph
Top speed (governor limited): 137 mph
Braking, 70-0 mph: 172 ft
Roadholding, 300-ft-dia skidpad: 0.79 g




Sent from my iPhone using Tapatalk

[3POINT5]

Here is car and drivers specs in xts-v

C/D TEST RESULTS:
Zero to 60 mph: 5.2 sec
Zero to 100 mph: 12.4 sec
Zero to 130 mph: 23.3 sec
Rolling start, 5-60 mph: 5.6 sec
Top gear, 30-50 mph: 2.9 sec
Top gear, 50-70 mph: 3.7 sec
Standing ¼-mile: 13.6 sec @ 105 mph
Top speed (governor limited): 137 mph
Braking, 70-0 mph: 172 ft
Roadholding, 300-ft-dia skidpad: 0.79 g




Sent from my iPhone using Tapatalk

Thats VERY close to a stock SHO... Seems like it may pull a little harder up top with that trap speed.