Pettit Super Charger Owners
11-28-2011, 02:52 PM
#9277
what vacuum line is that? I dont have it. Is it the one that goes to the jet air thingy?
If so then thats the reason as I removed mine.
If you have the jet air still in there--worm clamp that bastard! It can blow off
That had to be a pretty big vacuum leak......?
Glad you found it---want to sell that new o2 sensor....? lol. I will buy it for preventive maintainance.
If so then thats the reason as I removed mine.
If you have the jet air still in there--worm clamp that bastard! It can blow off
That had to be a pretty big vacuum leak......?
Glad you found it---want to sell that new o2 sensor....? lol. I will buy it for preventive maintainance.
11-29-2011, 06:18 PM
#9278
I don't remember
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How kool is that OD, looking good. After seeing your dyno sheet I am happier than ever with my tune. A 4th gear pull from 2500 to 7500, 2007 6spd auto. Max hp 235 Max tq 183. At the start of the pull
Can't wait to hear how your trip to the track went.
Can't wait to hear how your trip to the track went.
11-30-2011, 12:03 AM
#9280
https://www.rx8club.com/attachment.p...1&d=1322317101
hope that came through ok.
interesting dyno---huh
remember this is on 7psi only
The blue line is with water meth on using one 175cc nozzle post blower
the green line is back in 2006 when we first started identifying ignition coil problems---all four of mine where very bad!
hope that came through ok.
interesting dyno---huh
remember this is on 7psi only
The blue line is with water meth on using one 175cc nozzle post blower
the green line is back in 2006 when we first started identifying ignition coil problems---all four of mine where very bad!
If you said the W/M is turned on at the exact same moment as the apvs open then it could be explained - possibly .
Last edited by Brettus; 11-30-2011 at 11:47 AM.
11-30-2011, 10:59 AM
#9281
i know Brettus-- the water meth was on a maf voltage of 2.5 with progression to max at 5 volts. It's funny also that the a/f's did not change--not injecting enough to do that i guess with a single 175 cc injector post blower?
50/50 water meth solution used.
I think my engine "breaths" pretty good
and like I said--no boost drop.
The a/f's during that transition are ok--no lean spots--they change by 0.1 or 0.2.
I have been saying that the lim could use some work............ anyway thats my story and i am sticking to it.
50/50 water meth solution used.
I think my engine "breaths" pretty good
and like I said--no boost drop.
The a/f's during that transition are ok--no lean spots--they change by 0.1 or 0.2.
I have been saying that the lim could use some work............ anyway thats my story and i am sticking to it.
11-30-2011, 07:17 PM
#9283
I don't remember
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Very interesting OD. I discussed that lil spike with Kan during tuning and after and opted not to change injector latency to lessen it and make the a/f richer. I do like how adding the w/m made a flatter line even tho with a little less hp and tq. I have the same setup for w/m injection and intend to go with 3.5 to 5.0 open with 175, 50/50 mix pre blower.
I read about your cleaning up the blower from colored additives and looked around. Devils Own mix is clear 50/50 so I have purchased that.
The plot thickens.
I read about your cleaning up the blower from colored additives and looked around. Devils Own mix is clear 50/50 so I have purchased that.
The plot thickens.
12-01-2011, 08:41 AM
#9284
i have gotten to where i really dont like a pre blower nozzle. W/M vapor doesnt like to make turns and injecting pre blower it has to make a LOT of turns plus make it through the a/w intercooler. It is going to pool if you inject pre blower--i have no doubts on that. Since we are not tuning for it i dont know if that matters or not--- but I dont like it. The intake charge needs to be consistant. W/m will take space within the intake charge amount.I want it ot be a consistant percentage and if it is pooling there is no way that will be. Just my 2 cents?
Juan has said he hasnt had any buildup mixing his own --seems like maybe the Snows Boost Juice is the one that will leave residue in the a/w intercooler? IDK.
But, for now I am going to inject only post blower.
I have cool air getting to the blower and I am not wanting more boost so I should be OK.
Juan has said he hasnt had any buildup mixing his own --seems like maybe the Snows Boost Juice is the one that will leave residue in the a/w intercooler? IDK.
But, for now I am going to inject only post blower.
I have cool air getting to the blower and I am not wanting more boost so I should be OK.
12-02-2011, 05:24 AM
#9288
VP recommends using M1 for injection rather than M3 or M5
http://www.vpracingfuels.com/index.h...estion&ID=1997
He probably meant 25/75
.
http://www.vpracingfuels.com/index.h...estion&ID=1997
He probably meant 25/75
.
Last edited by TeamRX8; 12-02-2011 at 05:39 AM.
12-02-2011, 06:39 PM
#9289
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VP recommends using M1 for injection rather than M3 or M5
http://www.vpracingfuels.com/index.h...estion&ID=1997
He probably meant 25/75
.
http://www.vpracingfuels.com/index.h...estion&ID=1997
He probably meant 25/75
.
12-02-2011, 07:58 PM
#9292
Oops, sorry. Yes 25/75 and thanks for the VP info. I'll keep that in mind. However, we don't run turbos and very unlikely that combustion will happen between the blower and the LIM. Anyway, I'm on my third 5 gallon pail of M5 and never had a issue with it but will switch to M1 once I'm done with the M5.
12-05-2011, 08:42 AM
#9296
I'm here.
Road Atlanta w/e is now past history.
400 drivers at the event---FOUR HUNDRED!
They had one no point race ( end of season) childrens charity race in which there were over 100 cars on the track at the same time. 3 deep going under the bridge done to turn 12. It was a really fun race to watch.
No real major events--a few offs--no one to the hospital etc. People where driving clean and fast.
The weather was perfect for record breaking with ambient temps at a high of 65F--humidity in the 70% range. The first session out in the morning ( my group wouldnt you know) had to warm the track up a little for the rest of the guys. It was a little slick that first session. But even with 2 groups combined ( 1st session only) which meant approx 80 cars on track---no events. People for the most part played nice.
LOTS of blazingly fast cars--GT3's, the bad corvettes, Mustang Boss's with independant rear suspensions--thats right, daytona coupes, lotust super 7 turbo's--Lotus with honda transplant and boosted, several ls2 v/8 rx7's, GTR's, gran am GTO's an older model Toyota Celica rear wheel drive with some type of engine transplant that was hauling ***( i mean FAST) etc etc.
We had 6 Rx8's on track. No one had any issues.
My car did VERY well. The driver was rusty--big time and I was overslowing for turn in way too much and I was having trouble remembering the line for the blind turn in after going under the bridge/turn 12.
It did get better. My friend Don road with me once and helped me with it.
Not a single misfire, engine temps lower than they had ever been (less power i guess) as i never broke 195 on a 65F day!! That has never happened. AND my redline is now 8.2 K instead of the 7.5. My car really likes the upper rpms now. I was still getting my previous tune speed--135mph was normal (6th gear) and I could have gotten 140 I am sure by upping the redline to 8.5K and driving it a little harder. But actually i got over trying to get the fastest long straight speed and just was concentrating on turns in's and getting my line back. So on that long back straight I usually backed off a little I would redline in 4th, then slow shift to 5th and only used 1/2 throttle , then short shift to 6th and crused in at 120mph or so. That was really a good thing for me to do.
My basic track set up ( winter time)
no secondary radiator.
coolant 50/50 antifreeze/water
mazmart water pump and 180 thermostat.
flex a lite variable speed dual fan controller ( i think this really made a difference)
water methanol with only a 60 cc nozzle post blower. (only used 1/4 gal of w/m per 20 min session. activated at maf volts of 3 and progresses to 5v )
torco fuel ocatne booster added 16 oz's to 10 gallons of 93 shell gas ( 10% entanol)+approx 96-98 octane---it WORKS.
only 1/2 oz per gallon pre mix. I used Cam's pre mix.
engine coolant temps never got over 195F--oil temps 210-215.!!!!!!!!!
I am running 0-40 Mobile one.
The torco fuel additive did not leave a residue as many have reported . Maybe the small amout of water meth washed it away?
My air water intercooler--coolant temps---GET THIS--never over 80-85 F on ambient of 65F.
Morning sessions in which the temps where in the 40's--the coolant never got over 68F!
The a/w coolant temps by history ( when I had a pretty good intake temp gauge) reflect about 20F degrees cooler than the actual charge temp post blower( before the w/m nozzle).
So if i have a coolant temp of 80 the air in the manifold is 100F for example.
I do have an upgraded and large a/w coolant radiator--it has really helped with charge temps.
All in all--a really great w/e.
My car is a hell of a lot faster than it's driver
I do really like the tune.
Road Atlanta w/e is now past history.
400 drivers at the event---FOUR HUNDRED!
They had one no point race ( end of season) childrens charity race in which there were over 100 cars on the track at the same time. 3 deep going under the bridge done to turn 12. It was a really fun race to watch.
No real major events--a few offs--no one to the hospital etc. People where driving clean and fast.
The weather was perfect for record breaking with ambient temps at a high of 65F--humidity in the 70% range. The first session out in the morning ( my group wouldnt you know) had to warm the track up a little for the rest of the guys. It was a little slick that first session. But even with 2 groups combined ( 1st session only) which meant approx 80 cars on track---no events. People for the most part played nice.
LOTS of blazingly fast cars--GT3's, the bad corvettes, Mustang Boss's with independant rear suspensions--thats right
, daytona coupes, lotust super 7 turbo's--Lotus with honda transplant and boosted, several ls2 v/8 rx7's, GTR's, gran am GTO's an older model Toyota Celica rear wheel drive with some type of engine transplant that was hauling ***( i mean FAST) etc etc.We had 6 Rx8's on track. No one had any issues.
My car did VERY well. The driver was rusty--big time and I was overslowing for turn in way too much and I was having trouble remembering the line for the blind turn in after going under the bridge/turn 12.
It did get better. My friend Don road with me once and helped me with it.
Not a single misfire, engine temps lower than they had ever been (less power i guess) as i never broke 195 on a 65F day!! That has never happened. AND my redline is now 8.2 K instead of the 7.5. My car really likes the upper rpms now. I was still getting my previous tune speed--135mph was normal (6th gear) and I could have gotten 140 I am sure by upping the redline to 8.5K and driving it a little harder. But actually i got over trying to get the fastest long straight speed and just was concentrating on turns in's and getting my line back. So on that long back straight I usually backed off a little I would redline in 4th, then slow shift to 5th and only used 1/2 throttle , then short shift to 6th and crused in at 120mph or so. That was really a good thing for me to do.
My basic track set up ( winter time)
no secondary radiator.
coolant 50/50 antifreeze/water
mazmart water pump and 180 thermostat.
flex a lite variable speed dual fan controller ( i think this really made a difference)
water methanol with only a 60 cc nozzle post blower. (only used 1/4 gal of w/m per 20 min session. activated at maf volts of 3 and progresses to 5v )
torco fuel ocatne booster added 16 oz's to 10 gallons of 93 shell gas ( 10% entanol)+approx 96-98 octane---it WORKS.
only 1/2 oz per gallon pre mix. I used Cam's pre mix.
engine coolant temps never got over 195F--oil temps 210-215.!!!!!!!!!
I am running 0-40 Mobile one.
The torco fuel additive did not leave a residue as many have reported . Maybe the small amout of water meth washed it away?
My air water intercooler--coolant temps---GET THIS--never over 80-85 F on ambient of 65F.
Morning sessions in which the temps where in the 40's--the coolant never got over 68F!
The a/w coolant temps by history ( when I had a pretty good intake temp gauge) reflect about 20F degrees cooler than the actual charge temp post blower( before the w/m nozzle).
So if i have a coolant temp of 80 the air in the manifold is 100F for example.
I do have an upgraded and large a/w coolant radiator--it has really helped with charge temps.
All in all--a really great w/e.
My car is a hell of a lot faster than it's driver
I do really like the tune.
Last edited by olddragger; 12-05-2011 at 08:48 AM.
12-05-2011, 09:36 AM
#9297
Wow thats even more cars than they had last year.
Just be glad the track wasn't frozen for the first session like it was last year. Several wrecks each morning
Can't believe your temps stayed that low. I'm currently working on getting mine lowered.
Glad the weekend went smoothly.
Just be glad the track wasn't frozen for the first session like it was last year. Several wrecks each morning
Can't believe your temps stayed that low. I'm currently working on getting mine lowered.
Glad the weekend went smoothly.