What does xxx WHP feel like?
 

We all love to talk numbers and charts but my recent experience of driving an Apr tuned vw Sirocco really opened my mind that numbers aren't everything.

While the car was relatively quick (260whp), it didn't feel so inside the cabin as a driver or passenger. It certainly leaves my car in the dust but for some reason whether it's the manual transmission or the lack of sound deadening or the lowness of the seating position; it's more exhilarating to accelerate in the 86.

I ain't here to talk about other cars but it certainly got me curious on what a twin with actual Power feels like.

This car is all about feel so please share your own experiences for us no FI peasants


For a more consistent thread, this layout is preferred


Type of FI
Power level
Description of feel and maybe what car you can compare it to

This car feels pretty f'ing quick once it gets a moderate amount of mid-range torque. I am running a JDL kit with two different maps at 7 & 10 PSI. I have an idea of what the power level is just from speculation of other owners of the kit, I should be around 270-290whp and 230ish wtq. It is very much a midrange turbo...I find myself shifting at around 6,800 RPM now if I'm going full throttle as there is not much headroom at the top of the rev range with the turbo I have. The way the power is delivered is much much different than OEM. The chassis of this car is completely capable of handling sub 300 whp power without feeling unbalanced.


It is tough to make a comparison because I have only driven a few other FI cars. None of which had the feeling or delivery of power like my car. I have driven a bone stock FD RX-7...and I can say with complete confidence that any twin equipped with one of the basic/standard fare turbo kits on pump gas will go toe to toe with one.

Big topic.

- In general, the FR-S/BRZ has more steering and chassis feedback than your typical street car, which can make the car feel faster.

- In general, cars with smaller engines/lower hp tend to be geared a bit shorter. Up the power and this shorter stock gearing will make the car feel faster. This is especially true with folks who shorten their FD over stock.

- Feeling of acceleration varies widely with FI type, this has been covered many times in various threads - centrifugal SC's build boost as you rev and have a lot of top end, but typically feel less 'quick' than a turbo or positive displacement SC.

I haven't gotten to install my C38 Kraftwerks kit yet, but I can comment on the fact that my FR-S with P&L header and tune feels a lot faster than it actually is. It's one of the best things about these cars :)

200 HP
feels fine nothing to break your neck

It's more realistic to discuss in terms of torque-to-weight ratio. This is why a litre sport bike will out-accelerate just about anything with four wheels.

High torque is fun/thrilling but we quickly become accustomed to it. In my experience, not until the output of the powerplant becomes a challenge to control in any gear does it feel adequate.

That's where the idea of balance comes in. Put some less grippy wheels on a platform and it get's "fun" again.

pretty much how it feels like:

https://s-media-cache-ak0.pinimg.com...0c8d518c85.jpg

I have the Jackson Racing supercharger (c30) kit installed into my brz and at 5 pounds and 91 im around 286hp and at first it was a lot of power. Granted I had the stock wheels and tires so no matter what my traction control was working in 1st and 2nd gear. Now that im used to it and have wider better tires I definitely want more power but the kit still gives me that silly grin when I rip through the gears. Dont get me wrong ive upset alot of v8 owners however the car makes you feel so confident that you want more and more power, just dont blow your rods.

Id say my ESC with a mathematically derived (weight and trap speed) ~ 230whp/200wtq feels alot like a v6 accord or equivalent V6 sedan in power delivery.

XXX whp feels like warm apple pie...

in to see how deep this hole goes...

Damn. :lol: That is not good.

Mine feels about as fast as the speed of lint

No lol. But certainly alot better than stock. I can cut a 13.8 in the quarter.

xxx WHP be like:

[ame="https://www.youtube.com/watch?v=wrqiIjLGnCI"]techno crazy frog - YouTube[/ame]

710WHP = PLEASURE OVERLOAD.........

Type of FI:
Harrop Supercharger, 90mm pulley

Power level:
180kw, 280Nm at the hub

Description of feel and maybe what car you can compare it to:
Feels like an 86 with a V8 transplant. Thing ive noticed the most is how its changed my driving style. Pre blower i pretty much wrung its neck everywhere without worrying about throttle control, now i have to manage all that sweet torque. The 86 is really a big Go-cart so the impression of speed is magnified.
I traded in a new 6.2ltr Caprice for the 86, and while i would think the V8 might win a drag race it never gave me the goosebumps like the 86 does.

Do yourself a favour and befriend someone in a local 86 Facebook club with a FI 86 that might be happy to take you for a spin.

Take a picture of the timeslip, I'd be very interested to see how that stacks out. There are 300 HP twins having hard times hitting that.

This whole topic is dependant on traction, I can tell you that with my bridgestone turanza el400 all season tires I was hard pressed to make 13.8@103 on 244 RWHP and 214 RWTQ with the sprintex 335 kit on 93 due to traction issues. With more HP and less TQ I ran a 12.8@110 on the same tires on the 210 kit on e85.

Also, AWD, FWD, and RWD all have different feels.

600whp, barely gets out of boring and into the fun zone; sadly not exciting or scary anymore.

Are your tires 3x stickier than stock?

500whp feels nice

Currently yes, ET drag slicks, previously had r888s.

Speaks to my point. We get accustomed to that acceleration like it's heroin.

I used to make my living being shot off of an aircraft carrier at 8 Gs. It quickly became routine. Top fuelers just go out and do their jobs. It's more entertaining for the crowds than it is for the drivers.

going from 217TQ to 343TQ was thrilling :D

Going along with Dream20b I had a similar 210 setup and we both discussed times in the 1/4 mile thread. best I hit with street tires was 12.9xx and with drags I got down to 12.3xx. With around 280 - 300 whp or so you looking at being right in line with a stock 5.0 or previous gen SS in terms of feel and acceleration if that helps. This was of course with a PD supercharger so you have that midrange torque so maybe with a centri it might not "feel" as fast.

Currently switching to turbo so I'll see how that feels.

Bro what's up with the 13.8, I went 13.4 on a stg2 e85 tune n/a.... Post a slip. I assume you your running 1.9 60ft or worse....which would be understandable for a 13.8


PS I don't mean to sound like a ass I am just curious

Whats up is that I don't have drag radials or slicks lol. Just street tires. I only did a 2.15 60' as you can see. Where's your slip? Trap speed? I have only 1.x psi after 6500rpm so the ESC is very bad for drag no top end. Good for street and autoX.

A 1.9 would put me around 13.0-13.2

How about a video instead of a slip


[ame="https://www.youtube.com/watch?v=WzLqo6-VYR8"]13 47 frs - YouTube[/ame]


[ame="https://www.youtube.com/watch?v=o6uvBexBYX8"]Copy of 13.58 FRS Pass - YouTube[/ame]


I have ran as fast as a 104 trap and my 60ft n/a 1.79 was my best 13.5 was a 1.82 I believe. My slips are on the forum here somewhere.

Hornet or Tomcat?

Skywarrior

Freaking envy your previous job :). Yup, it's true. I also think it's very personal to me that I grew up with 600-700whp heavy cars, (supras, trucks and SUVs) so as soon as I hit 450-600whp I felt the FRS was amazing being how light it is but the drive back home from the dyno made me realize it's not enough; solidifying the heroin point im currently building a lighter car than the FRS with a 2j.

Tl;dr : If this is your first car that ull boost or build, and you do actually drive hard and beat the shit out of it; in no time you'll wrap a 86 around a tree with sub 400whp

In terms of feel, given the same power, a turbo feels quickest, twin screw SC next, centrifugal SC last.

What tires are you running? Obviously not street tires.

I have got the stock tires to hook a high 1.98 I ran a hoosier drag radial to hook a 1.85. I also changed the preload, dampening of the struts and ride height to tune in the 60ft

To that end I wonder if it's worth the cost of going turbo for the feels. I am half way into saving for the Ptuning kit but that JRSC is within striking range.

Around town, the JRSC does not feel fast; you still have to get the revs up like stock to get a good feel or the power. I'd go with a turbo or Edelbrock for "feel".

I'd compare the feel of a centrifugal supercharger on the twins to being more like an S2000. You still will need to wring it a bit, but when you do there is a ton up top, especially from 3rd gear onward.

You want a twin screw if you want a larger engine feel vs. a higher powered high revving engine feel in the centrifugal.

A turbo just usually climbs quicker in torque compared to a centri., and most kits will get you to the point where clutch, axles will be more vulnerable. The t wins seem to be OK up to around 9 to 9.5 PSI without any injectors/fuel pump, as well as clutch etc mods.