Triperformance

I'm interested in getting an RX8 and The horsepower I want to make is around 280rwhp. I honestly do not want to go forced induction but I just want to know some figures people are making at the wheels with n/a mods.

nelsonrx8

280 F/I only

chrism

searching may be difficult....bolt ons do nothing but noise.....na your lucky to get to 210

jones75254

iTrader: (2)

Trip, in case u didnt know the harsh reality (alot of newbs dont), the stock RX-8 makes 170-180whp (has been kown to vary +-5whp).

This should clear up any confusion or misconceptions you may be having.

FloppinNachos

You'll have to go FI or 3-rotor. Superchargers are pretty cool, not as hard to install as turbos and no lag!

The best N/A mod you can get right now seems to be the Cobb AccessPort tuning/reflash device (and more!), read https://www.rx8club.com/series-i-engine-tuning-forum-63/accessport-alpha-test-started-138169/ . People are getting +15whp. It costs $695 and would be a step towards going FI too.

mysql

Don't you wish you knew what you were talking about?

JB_Rotary

LOL

FloppinNachos

I noticed you drive a turbocharged RX-8...

It's common knowledge that superchargers (especially the only one used for RX-8s, the Pettit kit) are more responsive than turbos. They are generally easier to install too. You don't have to mess with the exhaust and there is less piping to deal with as well.


Can you please point out what is wrong with what I'm saying? or just continue making universal insults....

chrism

here it comes.....suit up!

staticlag

After installing my own turbo, I would have to agree that shoehorning a manifold and downpipe in a crowded engine bay isn't fun at all.

But the reason I went turbo after all was the expandability, power, and the delicious BOV sound

mysql

I'd be happy to. Unfortunately I'm at work and can't go into much detail.

1. You can install a turbocharged kit in less time than the SC. For example, with the greddy kit, you can easily do it in one day. The only difficult part is removing a wheel and a motor mount to get in the area of the exhaust manifold. The rest is putting pipes together using couplers. If you know lego, you can do it.

2. With a supercharger, specifically the Pettit kit - you only have to look at the dyno comparison thread to see that even in the low rpms, it does not make more power than the turbo kits. So at 3,000 rpm, if you mash the throttle, you will get more boost and a lot more torque with the turbo. There is no "lag" to speak of, when you have a properly sized turbocharger installed on the car. You'd need a giant turbo to get lag. What you're talking about is the urban legend that a supercharger = torque and no lag. In reality, it's the opposite.

In summary, you have to look forward to more cost (per hp), more moving parts, and a lot less torque if you went with a SC.

FloppinNachos

So you don't experience any unresponsiveness with your turbo?

staticlag

watch the video in his signature line

bose

iTrader: (5)

You reach peak boost in a turbo at lets say 3000 rpm. In a s/c you don't reach full boost until about redline, the power delivery is linear in a s/c and the boost increases with the rpm. so a turbo kicks a s/c in the nutz on power delivery, and in coolness factor.

FloppinNachos

I honestly had always thought that high hp adding turbos all had a good bit of lag.

So what are the advantages of the supercharger?

nycgps

iTrader: (1)

mysql knows what he is doing.

and lets not forget, the turbo in Greddy kit is small, smaller = faster + Tunning = not much lag.

Wind Dance

iTrader: (7)

Petit doesn't have much over the PROPERLY installed greddy turbo kit, but lets stay on topic here.

Tripaperformance 280hp, not even stating to the wheels is near-impossible n/a on our rennie. This is not your typical 4cyl or 6cyl where you could up the compression and mess with internals.

Rootski

iTrader: (1)

The boost is very linear so the power curve is very close to stock. Depending on the set-up it can also be more reliable, though many people seem to think means "idiot-proof."

mysql

That used to be the conventional wisdom, but even with a larger turbo like the GT3071R from MazdaManiac, the spool time is indistinguishable from the smaller greddy, while giving you +40 whp gains at the same PSI.

When I get the accessPort I'll once again tweak the boost controller, I still believe I can decrease spool time further.

HiTMaNN

100 rwhp without FI or NO2? Lawls

Bastage

iTrader: (1)

Here's a good place to learn from an unbiased source:

https://www.rx8club.com/series-i-major-horsepower-upgrades-93/power-adders-fi-dummies-turbo-supercharger-nitrous-122645/

mysql

^ That thread is a good source. We've gone over a lot of this stuff before.

Red Devil

Of course you're correct, as long as you ignore that there are positive displacement superchargers, or only acknowledge the existence of turbos that supply medium boost levels.

I'm so sick of this BS between the SC and turbo crowd. Pick out a desired power level, purchase the appropriate tool and be happy. Why is such a concept so hard that every time a thread like this starts all the propaganda begins...

HiTMaNN

Because every time a discussion starts a mediator like yourself likes to get his 2 cents heard on how we all should just hold hands and make love not war.

Red Devil

I guess next time I'll put in my two cents like you did in your first post on this thread, laugh at the OP, but offer nothing remotely constructive.