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My Himni Racing GT35R Turbo Kit Powered RX-8

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Old 06-22-2012 | 02:11 PM
  #26  
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9krpmrx8, what wheels are toughs? Mine are stock & yours are sexy!
Old 06-22-2012 | 02:18 PM
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More clear pics. I tried to get one of the water neck & housing but the downpipe blocks it all & didn't show anything. Next time I have the downpipe off, I will differently get a picture for you. Tried to get a few angles.
Attached Thumbnails My Himni Racing GT35R Turbo Kit Powered RX-8-eng22.jpg   My Himni Racing GT35R Turbo Kit Powered RX-8-eng44.jpg   My Himni Racing GT35R Turbo Kit Powered RX-8-eng33.jpg  
Old 06-22-2012 | 02:25 PM
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Originally Posted by 9krpmrx8
Yeah they probably turned the "automatic time update" feature off .
They're running XP I don't think they care to much about 'updates'.
Old 06-22-2012 | 03:29 PM
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if i could add some suggestions?
The oem coils will be "OK", but they will not last as long as with na.
At this power level you need a better ignition. Check them out--several options are out there.
Running colder plugs --I guess?
You didnt mention your fuel system--if you are still running on the oem fuel pump--swap out your old one for the s2 model--and soon. I would hate to see you have a fuel delivery problem.
Did they leave the intake valves opening at the oem times?
how is the intake air temps measured? The cars systems voltage in part is determined by the iat's that are sent to the pcm which in turn allows the voltage regulator to either up the system voltage or reduce it.
Sorry for all the questions!
Old 06-22-2012 | 03:57 PM
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Originally Posted by Reason116
The 1st day out of the shop.. I raced a moded FD RX7 & beat it! I flipped out J
What do you call modded? My FD did 315whp with just bolt-ons at 12psi on stock twins, and it weights 2800lbs. So it was either stock, automatic, miss shifted or let you win :D


Originally Posted by bse50
I don't see why anybody would trade spooling times for a bigger, unnecessary turbo for the same power output.
Less boost required, less heat, less stress, etc etc.

Last edited by neit_jnf; 06-22-2012 at 05:34 PM.
Old 06-22-2012 | 04:00 PM
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Originally Posted by neit_jnf
What do you call modded? My FD did 315whp with just bolt-ons at 12psi on stock twins, and it weights 2800lbs. So it was either stock, miss shifted or let you win :D

Less boost required, less heat, less stress, etc etc.
Anything modified is modified
Old 06-22-2012 | 04:05 PM
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Originally Posted by neit_jnf

Less boost required, less heat, less stress, etc etc.
Makes no sense if you understand what boost is and what stresses an engine.
It's only less efficient, slower spooling and heavier.
Old 06-22-2012 | 04:28 PM
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All sounds good to me - 310 on 8.5psi is realistic and a good indicator as to what the potential for the kit will be . The fact they got that on the very first tune is testament to a job well done IMO.
400 whp at about 15-16psi should be very possible

What is controlling the coil dwell - microtec or stock ECU ? If it is the stock ECU you will want to up the dwell 5-10% from about 5000rpm on up before you try running more boost .

Last edited by Brettus; 06-22-2012 at 04:33 PM.
Old 06-22-2012 | 04:30 PM
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Yep, and on a motor with such high mileage, that is just crazy.
Old 06-22-2012 | 04:48 PM
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Originally Posted by 9krpmrx8
that is just crazy.
I'll tell you what is crazy ... believing 400+whp on a GT35 @ 10psi . And we all lapped it up
Old 06-22-2012 | 05:08 PM
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Yeah
Old 06-22-2012 | 05:46 PM
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Originally Posted by bse50
Makes no sense if you understand what boost is and what stresses an engine..
It does makes sense if YOU understood what boost is and what stresses an engine.
Don't make assumptions about what people do or don't know.

What's better 310whp on a small turbo pushing 20psi, or a bigger turbo at 8psi? It also depends on what you want to accomplish with the engine.

Originally Posted by bse50
It's only less efficient,
Depends on where in the compressor and turbine maps the Pressure Ratio and Flow are, the compressed air actual temperature vs calculated, etc.

Originally Posted by bse50
slower spooling and heavier.
Agree

There are many ways to see things and to design systems based on the goals to be attained.
Old 06-22-2012 | 05:55 PM
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Originally Posted by neit_jnf
What's better 310whp on a small turbo pushing 20psi, or a bigger turbo at 8psi? It also depends on what you want to accomplish with the engine.
.
310 is hardly any more than an upgraded Greddy will make on 8.5 psi as well so i don't think well ever see 20psi and 310whp on any setup that has been installed properly. But I get your point .
Old 06-22-2012 | 09:09 PM
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Originally Posted by Reason116
They tuned out the dip in the graph & is why it's highlighted I think. You can see the over lapped runs where one dips more. That's were they tested if it was rich or lean there. I think adding more fuel on that spot made it dip more so they pulled some out right there to level it out clean. It's was gone shortly after but not sure it I snapped a pic or not. I was running around all happy

I wonder if that dip has something to do with this :

https://www.facebook.com/photo.php?v=10151053526323894
Old 06-22-2012 | 10:09 PM
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Originally Posted by RotaryTherapy
I wonder if that dip has something to do with this :

https://www.facebook.com/photo.php?v=10151053526323894

I would say definitely not ... But good find anyway !
Old 06-22-2012 | 10:56 PM
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Interesting. However my BHR pumps holds strong at 60psi thru-out the power band, it never drops below 58psi or so. As long as my tank doesn't fall below 1/4 tank or so.
Old 06-23-2012 | 12:32 AM
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Originally Posted by 9krpmrx8
Interesting. However my BHR pumps holds strong at 60psi thru-out the power band, it never drops below 58psi or so. As long as my tank doesn't fall below 1/4 tank or so.
maybe .......... but it's not like you have really tested it yet either . I did have an issue with mine when i first fitted it . After a hard left down to 1/8 tank and wot through the gears it gave up at the end of third gear . Was told at the time it was another issue ...... by guess who

Last edited by Brettus; 06-23-2012 at 12:35 AM.
Old 06-23-2012 | 03:18 AM
  #43  
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From: Caput Mundi
Originally Posted by neit_jnf
What's better 310whp on a small turbo pushing 20psi, or a bigger turbo at 8psi? It also depends on what you want to accomplish with the engine.

Depends on where in the compressor and turbine maps the Pressure Ratio and Flow are, the compressed air actual temperature vs calculated, etc.
I would find a turbo and run it in its efficiency range, which varies depending on the engine. That was my point: a gt35 is useless when there are other turbos with better flow charts, compressor maps, whatever to make the same power while spooling sooner.
Old 06-23-2012 | 09:05 AM
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explain the fp video--did the fp falter while the voltage was constant?
doesnt the fp need some head pressure to continue its flow consistently? The pick up and the cup on the s1 model is wack.
Old 06-23-2012 | 09:07 AM
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yall do not ignore my question concerning the iats relationship to the systems voltage. 1/2 to 1 volt is a huge difference to the f/p and makes tuning the dwell/fuel injectors more difficult.
Old 06-23-2012 | 10:03 AM
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Originally Posted by olddragger
explain the fp video--did the fp falter while the voltage was constant?
doesnt the fp need some head pressure to continue its flow consistently? The pick up and the cup on the s1 model is wack.
Has nothing to do with voltage, the FP sucks more fuel than the housing can refill.
Old 06-23-2012 | 10:42 AM
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Originally Posted by Brettus
maybe .......... but it's not like you have really tested it yet either . I did have an issue with mine when i first fitted it . After a hard left down to 1/8 tank and wot through the gears it gave up at the end of third gear . Was told at the time it was another issue ...... by guess who

True, I have not tested under track conditions.
Old 06-23-2012 | 03:23 PM
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subscribed; that looks a lot better than that tuna can charger on the Greddy kit.
Old 06-23-2012 | 06:10 PM
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Sweet set up. Gotta be happy with the power you are getting.

I have found with increasing boost preassure I am now getting more oil blow by via the filler neck. I have now installed a catch can to deal with the issue. So, if you are on a high mileage engine then you may suffer from similar problems as you increase boost as boost will escape past the side seals and preasurise the crankcase.
Old 06-23-2012 | 09:42 PM
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then that is one reason the s2's where designed differently--thanks for the video link--picture is worth a 1000 words!


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