Notices
Series I AT-Specific Performance Mods Discuss engine and transmission modifications for your AT equipped RX-8

Step by step to tune up your 8 @200whp

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old 07-03-2006, 12:21 AM
  #1  
WedsSport Member
Thread Starter
 
R888's Avatar
 
Join Date: Apr 2004
Location: Canada, TO
Posts: 756
Likes: 0
Received 0 Likes on 0 Posts
Step by step to tune up your 8 @200whp

Hi guys,

Just have a thought on this

1. Intake, header, RB highflow cat, exhaust =15HP assume
2. Interceptor X = 10HP assume
3. Turbo, which I don't think is a good idea for automatic. SC maybe better. = 50 HP assume.
4. Our AT with 91 should be 140 @whp on dyno.
5. Spark plug.
6. Emanage? = 10HP adjustment

Should this work up to 200@whp with a fine tuning !?

Lets work together and enjoy the result!! I am looking forward on it.
Old 07-05-2006, 11:17 PM
  #2  
Rotary Noob
 
Discman2's Avatar
 
Join Date: Jan 2005
Posts: 335
Likes: 0
Received 0 Likes on 0 Posts
why would you have emanage AND interceptorX? they are the same things
Old 07-05-2006, 11:23 PM
  #3  
Registered User
 
toxin440's Avatar
 
Join Date: Aug 2005
Location: Texas
Posts: 994
Likes: 0
Received 0 Likes on 0 Posts
and with all the money you spend on that stuff - you could trade in your 8 and get a 6MT loaded with all the goodies and still be faster, and more fun
Old 07-10-2006, 01:01 PM
  #4  
Registered User
 
justjoshin8888's Avatar
 
Join Date: Jun 2006
Posts: 21
Likes: 0
Received 0 Likes on 0 Posts
just so u know this, there r no headers on a rotary engine.
Old 07-10-2006, 01:33 PM
  #5  
Bummed, but bring on OU!
 
therm8's Avatar
 
Join Date: Sep 2003
Location: Charleston, SC
Posts: 2,036
Likes: 0
Received 1 Like on 1 Post
With Petit's supercharger, a high flow cat, and a tune you'd be at 200whp+ peak most likely. But that's less important than the torque/power you'll have down low. That's where the big improvement in acceleration will come from.
Old 07-10-2006, 01:40 PM
  #6  
Banned
iTrader: (3)
 
MazdaManiac's Avatar
 
Join Date: Oct 2003
Location: Under my car
Posts: 16,386
Likes: 0
Received 25 Likes on 21 Posts
Originally Posted by justjoshin8888
just so u know this, there r no headers on a rotary engine.
There are several headers avaliable, but none really do anything. The exhaust ports on the housings are too small for it to matter.
Don't talk out of your ***.

Originally Posted by therm8
With Petit's supercharger, a high flow cat, and a tune you'd be at 200whp+ peak most likely. But that's less important than the torque/power you'll have down low. That's where the big improvement in acceleration will come from.
With an SC (or any FI of any sort) you will see a much bigger gain than that.
However, don't be fooled by those that seem to believe that an SC produces more power "low down" than a properly tuned turbo. It just isn't the case.
An SC looses to a turbo in almost every way (oter than the cool noises).
Old 07-10-2006, 01:51 PM
  #7  
Registered User
 
Aseras's Avatar
 
Join Date: Mar 2005
Posts: 1,587
Likes: 0
Received 1 Like on 1 Post
Originally Posted by MazdaManiac

With an SC (or any FI of any sort) you will see a much bigger gain than that.
However, don't be fooled by those that seem to believe that an SC produces more power "low down" than a properly tuned turbo. It just isn't the case.
An SC looses to a turbo in almost every way (oter than the cool noises).
SC does have more power available on tap than a turbo at low rpm's. turbo has lag, a sc has boost right away. The SC also doesn't run nearly as hot as a turbo will and suffers less from heatsoak. turbo is still better as far as on the fly tunability.

in the end though whichever one delivers the most air with the correct tuning wins, whichever FI you go with.
Old 07-10-2006, 02:17 PM
  #8  
Banned
iTrader: (3)
 
MazdaManiac's Avatar
 
Join Date: Oct 2003
Location: Under my car
Posts: 16,386
Likes: 0
Received 25 Likes on 21 Posts
Originally Posted by Aseras
SC does have more power available on tap than a turbo at low rpm's.
\

BS

Originally Posted by Aseras
turbo has lag, a sc has boost right away.
More BS

Originally Posted by Aseras
The SC also doesn't run nearly as hot as a turbo will and suffers less from heatsoak.
Even more BS

Originally Posted by Aseras
turbo is still better as far as on the fly tunability.
Still BS, just for its generality.

All of those assumptions have no basis in fact - they rely on anecdotal evidence from one poorly applied or archaic installation after another. Those are simply old assertions made over the years to justify one choice.
There will always be poor ways to implement either.
Old 07-10-2006, 03:07 PM
  #9  
Bummed, but bring on OU!
 
therm8's Avatar
 
Join Date: Sep 2003
Location: Charleston, SC
Posts: 2,036
Likes: 0
Received 1 Like on 1 Post
Originally Posted by MazdaManiac
With an SC (or any FI of any sort) you will see a much bigger gain than that.
Well, I was just going by Pettit's prototype numbers of 190hp/240tq. The blower's setup isn't going to do much more than that without a new pulley (I'm guessing). Though that is on stock injectors, so more may be available with more fuel. Hymee's bigger blower would allow for bigger #'s. I also assumed a 10-15hp gain with a free(er) flowing exhaust.

Originally Posted by MazdaManiac
However, don't be fooled by those that seem to believe that an SC produces more power "low down" than a properly tuned turbo. It just isn't the case. An SC looses to a turbo in almost every way (oter than the cool noises).
Nobody's foolin' me. I wasn't comparing the 2 anyway. I was simply comparing the 120-130lb-ft of torque stock to the 200+ with the SC. My last car was a turbo 5-banger, so I know about low end torque from turbos.
Old 07-10-2006, 08:12 PM
  #10  
WedsSport Member
Thread Starter
 
R888's Avatar
 
Join Date: Apr 2004
Location: Canada, TO
Posts: 756
Likes: 0
Received 0 Likes on 0 Posts
Petit, where are you? We need the SC


ASAP!!!!
Old 07-11-2006, 12:41 AM
  #11  
Banned
iTrader: (3)
 
MazdaManiac's Avatar
 
Join Date: Oct 2003
Location: Under my car
Posts: 16,386
Likes: 0
Received 25 Likes on 21 Posts
I love your 'vatar, therm8!
Bet it doesn't last a week. But I'll join ya!
Old 07-11-2006, 02:05 AM
  #12  
^NieL
 
N rider89's Avatar
 
Join Date: Oct 2005
Location: santa clara ,ca
Posts: 2,560
Likes: 0
Received 1 Like on 1 Post
i love both of them. pure goodness
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
tbiggybig
RX-8 Discussion
35
07-14-2022 06:14 PM
Hunterkelley24
Series I Engine Tuning Forum
14
06-14-2022 08:32 AM
Shankapotamus3
Series I Trouble Shooting
28
03-14-2021 03:53 PM
Danield97
Series I Trouble Shooting
1
09-30-2015 05:59 PM
Luke.s
New Member Forum
4
09-30-2015 05:57 PM



You have already rated this thread Rating: Thread Rating: 0 votes,  average.

Quick Reply: Step by step to tune up your 8 @200whp



All times are GMT -5. The time now is 02:36 AM.