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Old 07-17-2002, 11:03 PM   #1
skywalker
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Talking 13 PSI with Link, no pinging, fun fun fun...

Well last night I decided it was finally time to try a MBC. So I dropped it in, started working on setting the boost and finally after about 1 hour of small tests got the boost around 13 PSI. This is on a stock engine block (9.7:1), pistons, rods, etc...

So I tried it out with 13 PSI and I am happy to say I have no pinging. Of course I would really not recommened anyone doing this. Just wanted people to know it is possible to boost up to 13 PSI with no pinging. Wether that is good on the engine or not is a another question. Personally I doubt it, and wonder how much longer my car will last.

After that I dropped it back down to 7 PSI and have been having a blast with that.

As for mods to the Engine I have:
440cc injectors (supply enough fuel)
Walbro High Flow Fuel Pump
Parallel Fuel Line Conversion
1 Step Colder NGK Plugs, (probably should get even one more step colder)
Link Plus Engine Management
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Old 07-17-2002, 11:10 PM   #2
KillerTHC
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wow... and you do this when i'm not around... lame! you have to give me a ride when i get back!!
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Old 07-17-2002, 11:17 PM   #3
ImportInvasion
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Doesnt the Link have boost control built in? I would think that might allow more control?

-NOah
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Old 07-17-2002, 11:34 PM   #4
KillerTHC
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Quote:
Originally posted by (-ImportInvasion-)
Doesnt the Link have boost control built in? I would think that might allow more control?

-NOah
you have to buy the boost solenoid that goes with the link and that unit is quite pricey.
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Old 07-18-2002, 12:08 AM   #5
LVSUBARU
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Just curious.....which MBC did you use?
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Old 07-18-2002, 12:32 AM   #6
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Quote:
Originally posted by LVSUBARU
Just curious.....which MBC did you use?
Oh oh. Looks like someone has "1 more lb-itis".
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Old 07-18-2002, 12:34 AM   #7
LVSUBARU
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I'm waiting till it cools down outside abit!!
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Old 07-18-2002, 01:47 AM   #8
Andrew
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im going to beat you up bill. you better give me a ride
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Old 07-18-2002, 01:49 AM   #9
Marcin
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Damn, 13psi. that's insane. Are you using any knock protection?J&S?
What setup you have?
Watch your tranny, man.
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Old 07-18-2002, 02:49 AM   #10
ImprezaRS dot com
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The link plus has closed-loop knock control. So, a J&S is redundant.

Also, Shiv made 400hp at crank (296@wheels) on 12 psi with 96 octane on a stock my99 block. So, on a cool night 13 psi without knock, and enough timing retard is doable.

I run 10-12 psi routinely on hot days with 4-6 degree of retard on stock ECU and 14 psi on cold days; on a 1999 shortblock with phase I pistons/head-gaskets and o-ringed block, but I am at 6,000 feet.

In a nutshell, you could leave it at 8-10 psi routinely at sea-level with a link plus properly tuned without knock. 7 psi is for babies
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Old 07-18-2002, 03:09 AM   #11
Andrew
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Quote:
Originally posted by ImprezaRS dot com
7 psi is for babies

hahahaha, bill did you hear that you baby? !!
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Old 07-18-2002, 09:38 AM   #12
Mariano
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I finally got my clutch (from Clutch Master) and I hope to have the same fun when installed this next weekend . When I went rs-T I had my stock clutch w/ 62K miles; so spliping has been a pain in the a$$.... It doesn't really matter if I got 5psi's or 13psi's, the clutch will slip like a beotch!!... FUN, FUN, FUN.

....by the way, what spark plugs are you using?

Mariano
"life starts at 2500 rpms...."
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Old 07-18-2002, 11:48 AM   #13
Graham
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Skywalker, when you had it up to 13 psi, did you mess around with your timing or anything or just leave it on the low boost setting?

I would be curious to know how fast your car would be to 60 MPH, any chance you'll crank it back up and do some tests?

Graham
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Old 07-18-2002, 12:13 PM   #14
PunKidd
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Not to hijack the thread or anything, but Bill did you ever have any luck w/ the cheeper internal WG boost control solenoid?
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Old 07-18-2002, 12:51 PM   #15
skywalker
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As for the boost solenoid, I am goign to head to AMR today and we are going to nail the problem down if there is one and thenn call Link to see what they can do to get the Boost Solenoid we have to work. Supposedly the way the Link was setup it shoudl be able to use any internal or external wastegate.

That is why I am using a MBC right now, and it is $30 cheapo one you get with the Stage 0. Someone didn't need it so I used it.

As for what "stuff" I have in the car.
LudeSpeed Stage II (Version I) (Small T3 Turbo)
Stock Tranny,
STi Tranny and Engine mounts
ACT Clutch
Exedy Flywheel
NGK 7's
MAX RPM 6500

As for tuning I didn't tune at all since my MAP was already setup for it. I usually tune my link way above where i will ever go. Well I guess I went there the other night. I had never boosted there before, but the MAP is to "safe" at those boost levels, lots of retarding and lots of fuel. So I will start tuning it probably in the next few days and see what kind of boost levels I can maintain, safely for extended periods of time.

One thing I do want to do is get some better fuel rails and bigger fuel lines from the tank, I am worried the lines might be a little to small and will not flow enough fuel. Any thoughts on that?

As for knock I have the Link set at a sensitivity of 25 for pinging, once it goes above that it pulls timing at that posistion.
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Old 07-18-2002, 02:14 PM   #16
Kevin Thomas
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Default Re: 13 PSI with Link, no pinging, fun fun fun...

Quote:
Originally posted by skywalker
After that I dropped it back down to 7 PSI and have been having a blast with that.

As for mods to the Engine I have:
440cc injectors (supply enough fuel)
Walbro High Flow Fuel Pump
Parallel Fuel Line Conversion
1 Step Colder NGK Plugs, (probably should get even one more step colder)
Link Plus Engine Management
Skywalker,

Did you need the Link ECU to control your 440cc injectors? Have you driven your car around with your 440cc injectors installed using your stock ECU? If so, what was it like? Exactly what kind of injectors do you have (Nissan, DSM, etc). Thanks!

BTW: I agree with you on the spark plugs. Any lbs of boost about 7.5, I'd go with 2 steps colder. *sigh* 13lbs of boost must be awefully nice to drive with. *sniffle*
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Old 07-18-2002, 03:36 PM   #17
redmeanie
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911verion2.0TT (soon)

Default SKYWALKER....

Keep us posted on the fix for the solinoid....I talked to ANDREW and I have to send him a data log so we can figure out why it hasn't been working ....But since your going to him so he can see in person perhaps a fix is at hand....temporarily Im installing a manual boost controller....Keep us posted ....And how about e-mailing me a copy of your map to look at.....
Thanks,
Chuck
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Old 07-18-2002, 08:00 PM   #18
skywalker
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I have driven around with the Stock ECU and the 440cc injectors before I had the Link in, but I also had an AFC and ITC in there to control some timing and fueling.

I will say it does help having the injectors a lot especially with an AFC. The accelleration was much smoother after I put them in. Though when I put the Link in and took out the AFC and ITC, I gained 20-30 Hp because I could actually tune the car.

I am using 440cc RCeng.com injectors. A lot of poeple run them and they were very helpful in answering questions. Of course this was about 2 years ago and I have heard lately they are not quite as helpful anymore. Probably because they have been growing...

As for giving out my MAP, sort of can't do that. Since I am a tuner for Link USA it is in my best interest to not do that. Though I can help you tune your car over the internet. I have helped quite a few poeple so far, I try to get back to you with some sort of solution within 48 hours.

I'll see if I can video tape 13 PSI sometime in the future for all you guys... Not sure how to do it so you can really get the feel of it. Maybe if I were "driving" next to an Corvette?

Anymore questions, post away...
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Old 07-18-2002, 08:21 PM   #19
wac
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Quote:
As for giving out my MAP, sort of can't do that. Since I am a tuner for Link USA it is in my best interest to not do that. Though I can help you tune your car over the internet. I have helped quite a few poeple so far, I try to get back to you with some sort of solution within 48 hours.

I'll see if I can video tape 13 PSI sometime in the future for all you guys... Not sure how to do it so you can really get the feel of it. Maybe if I were "driving" next to an Corvette?

Anymore questions, post away...
Here goes...

1. I'm curious as to how many Link Plus units were imported into the US before anyone realized that there was a problem with the boost control function. Are you privy to such information? Or are you just a guinea pig too? (Makes me wonder about the knock control and anti-lag functions...)

2. If you can't give out your MAP, how about a generic "safe" one? The ignition numbers I've seen posted elsewhere in this forum are very conservative to say the least.

3. Next to a dyno chart, the best way without killing your tranny is probably doing a G-Tech Pro hp run. Use something like 3000 lbs or 3200 lbs for the car weight, and then others can see and compare the hp run to other cars using the same weight settings. No need to worry about absolute numbers using this method.

4. Another way is to videotape the RPM gauge while granny-shifting a 0-60 or 1/4 mile run. Most owners know how fast the revs climb in their cars in various gears...

-WaC
Wayne
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Old 07-18-2002, 10:01 PM   #20
skywalker
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Default

As for the boost solenoid problem. It isn't really a problem as we are using a NON-Link solenoid. The reason, it si much cheaper, but we can not get it to work, so we are seeing what can be done to make it work properly. Wether it be working something out with Link or getting another Solenoid.

As for the MAP, I really can't give those out, it's my bread and butter. Sort of the same thing with the wiring for the WRX to RS conversion, if we give that out we go broke. Yeah you may not like it but how are we expected to stay in business if we give away our secrets.

Though is someone else goes out and figures it all out and gives the stuff away, great for them.

As for a "safe" map, the only problem with that is knowing what is in your car and then giving you a MAP for that setup. I am working with AMR on this area to see what we can do.

I have done a dyno recently and recorded 190Hp to the wheel with 5 PSI. I will probably be going again sometime and see what 13 PSI does.
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Old 07-19-2002, 11:30 AM   #21
bill harvey
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So now are we sure that it is the solenoid. so if i purchased the link solenoid i woud have boost control?
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Old 07-19-2002, 11:38 AM   #22
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Bill - yes, the LINK boost solenoid allows the LINK to do boost control..check your PM's too!

adam
www.z1auto.com
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Old 07-19-2002, 01:59 PM   #23
skywalker
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Talking

As stated in this post, the cheaper solenoid does work, but it does boost spike a little. Of course we (AMR and I) are both thinking that has to do with the Deltagate or Deltacrap in my car. We are going to try it on a TIAL this weekend and see how it well it works.

Boost Solenoid Works
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Old 07-19-2002, 02:18 PM   #24
bill harvey
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strange because i am running an internal waste gate with the solenoid from my blist sbc and it is plumbed the same way as it was when it worked with the blitz yet it won't work with the link? i find it funny that everyone who bought one is haveing trouble controlling the boost, we all managed to wire our cars make them run but the boost control solenoid is beyond our ability? well i am going to go drive my low compresion 2.2t with 2psi weeeeeeeee... that 2psi was not a typo.
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Old 07-19-2002, 03:32 PM   #25
wac
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Quote:
As stated in this post, the cheaper solenoid does work, but it does boost spike a little. Of course we (AMR and I) are both thinking that has to do with the Deltagate or Deltacrap in my car. We are going to try it on a TIAL this weekend and see how it well it works.
Can you please share what WG Base and WG Sens numbers you used? Or are these your "bread and butter" too? If you can kindly share this information, what WG RPM and Boost Hold numbers did you use?

FYI, Bill's car has more than just a little boost spike. The WG solenoid output never strays from 100% according to all the PCLink datalogs. Or 104% according to the Tuning Module, although there's theoretically no such thing as 104% duty cycle. Thus, it will happily boost all the way to 15 psi if the MAP Limit allows.

The Blitz solenoid is no cheap plastic unit - it worked flawlessly in his car for a year until it was rewired to the LinkPlus (without touching the hoses). It operates just as the LinkPlus manual describes how the "common", "pressure", and "bleed" ports on the Link solenoid should, so the Blitz solenoid is technically not defective.

-WaC
Wayne
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