DSMLINK v3; AUTOX classes?

[Xploitn]

So my main question is,
1. What class does dsmlink put you in?
I just finished reading the class portion of the 2012 SCCA Solo Rules and the only section that even mentions ECU's was in the Street Touring Section. I have quoted the part that I am refering to below.

I will be running in Street Prepared because of my FMIC. I know the turbo has to stay a T25, but a MBC and fuel pump are able to be changed in street prepared.
2. Could anyone clarify whether injecters, AFPR's, and DSMlink are allowed in street prepared?

Since I'm going to have to keep the T25, I will be setting the MBC to 14psi (T25's max).
3. Should I even bother with the tuning and support parts (DSMlink, wideband, Fuel pump, AFPR, injectors) at that psi?
I know I can do this research in the numerous with the numerous threads about this topic, but I thought I'd stick this question in with the others.

Thanks!

F. The engine management system parameters and operation may be
modified only via the methods listed below. These allowances also
apply to forced induction cars, except that no changes to standard
boost levels, intercoolers, or boost controls are permitted. Boost
changes indirectly resulting from allowed modifications are permissible,
but directly altering or modifying the boost or turbo controls,
either mechanically or electronically, is strictly prohibited. Traction
control parameters may not be altered. Any standard OBD communications
port functionality must remain. The Check Engine Light
(CEL) or Malfunction Indicator Light (MIL) may be disabled via software.
Alternate software maps which violate these restrictions may
not be present during competition, regardless of activation.

1. Reprogrammed ECU (via hardware and/or software) may be used
in the standard housing.
2. Supplementary (“Piggyback”) ECU may be used subject to the
following restrictions:
a. Connects between the standard ECU/PCM and its wiring harness
only.
b. Must be plug-compatible with the standard ECU/PCM (no splices).
14. Street Touring® Category — 89
3. Electronic components may be installed in-line between an engine’s
sensors and ECU. These components may alter the signal
coming from the sensor in order to affect the ECU’s operation of
engine management system. Example: fuel controllers that modify
the signal coming from an airflow sensor.
4. Fuel pressure regulators may be replaced in lieu of electronic alterations
to the fuel system. It is not permitted to electronically
modify the fuel system AND replace a fuel pressure regulator.
5. Ignition timing may be set at any point on factory adjustable distributor
ignition systems.
6. VTEC controllers and other devices may be used which alter the
timing of factory standard electronic variable valve timing systems.​

http://scca.cdn.racersites.com/prod/assets/2012_Solo_Rules_February_reduced.pdf

 

[Colt4G63 also]

I see a lot of people running in Street Modified; it seems like a good fit.

 

[snowborder714]

So my main question is,
1. What class does dsmlink put you in?
I just finished reading the class portion of the 2012 SCCA Solo Rules and the only section that even mentions ECU's was in the Street Touring Section. I have quoted the part that I am refering to below.

You're correct. Street Touring is where you'd be with ECMlink.

I will be running in Street Prepared because of my FMIC. I know the turbo has to stay a T25, but a MBC and fuel pump are able to be changed in street prepared.
2. Could anyone clarify whether injecters, AFPR's, and DSMlink are allowed in street prepared?

Street Prepared allows you to upgrade injectors.
Street Modified allows you to upgrade your regulator.

The way SCCA rules work is anything from the previous categories are allowed. So since ECMlink is allowed in Street Touring, it's allowed in Street Prepared.

Since I'm going to have to keep the T25, I will be setting the MBC to 14psi (T25's max).
3. Should I even bother with the tuning and support parts (DSMlink, wideband, Fuel pump, AFPR, injectors) at that psi?

I would say any tuning can help. You can lean out the car or add more timing, along with other things. Since you're running that low of boost on a T25, you wouldn't need to upgrade your pump or AFPR, which would allow you to run in a lower class. I'd just rewire the stock pump and roll with that as long as that doesn't bump you up pasted Street Prepared.

 

[ACM]

ST* doesn't allow MBCs, boost control has to be stock. Fuel system components are essentially free in SP, boost control is free in SP, engine management is free in SP.

If you expect to be competitive in SP you'll be running ~25psi through the mid range and "whatever" you can get the T25 to pump up high - expect to replace your T25 at least once each season. I would suggest you run a modified version of the stock boost control system so that you are not replacing the T25 monthly. You will of course be running race gas or ethanol, or you'll be changing motors along with T25s monthly.

Charles

 

[Xploitn]

Colt, are all 1986 posts of yours just as helpful as the one you posted in this thread?

On a less sarcastic note, thank you all, but it looks like Charle's and Brian's info conflicts about fuel components for SP. Brian said that AFPR was limited to SM and up while Charles said that fuel system components are free in SP. I am asking for this information because I read over the 2012 rules 2-3 times and didn't see it. Could someone quote a rule that supports their info?

I'm not 100% sure what you are saying in the second paragraph Charles.

If you expect to be competitive in SP you'll be running ~25psi through the mid range and "whatever" you can get the T25 to pump up high

I still have to do more research about tuning Air/Fuel but could you clarify what you mean?

I would suggest you run a modified version of the stock boost control system so that you are not replacing the T25 monthly.

Wouldn't a MBC qualify? How would having a MBC or other modded stock boost control system help the life of the turbo? I did a search on "modded sotck boost control" and didn't find any relative results.
It's farfetched but are you suggesting that I run my T25 at 25psi and just replace it as it inevitably fails?

 

[Colt4G63 also]

Yes, all my posts are extremely helpful, and trustworthy.(Just check the chicklets) I run my car in SM, so naturally everyone else should.

 

[snowborder714]

Here's the quote I was going off which is found on page 109 (noted at the bottom of each page in the PDF you linked to):

Any fuel pump(s), filter(s) and pressure regulator(s) may be used. Such components may not be located in the passenger compartment, but their location within the bodywork of the car is otherwise unrestricted. If a mechanical pump is replaced, a blanking plate may be used to cover the original mounting point.

Next to the page number it says Street Modified Category. If I'm reading/interpreting something incorrectly Charles, let me know.

 

[Xploitn]

@ Colt, tbh I naturally assumed I was SM kinda because everyone else was! That and I assumed my FMIC would doom me to SM for sure. I'm glad I read the rules before I started going deep down the path of weight reduction. Turns out the FMIC is the only mod right now that bumps me out of9 ST. It's okay though, I want the sitcky, fatty tires for SP.

After my last post, I read the rules again while on the plane. I kept what you guys mentioned in my mind and I am reading and interpreting the rules the same way you are Brian. Maybe the rules have changed, dunno. But hey, at least I know the line I can't/shouldn't cross now.

Just to consolidate it to one spot, I'll put what I've learned from this thread and a little additional knowledge below:
Street Touring allows you to upgrade to ECMlink or another engine management system
Street Prepared allows you to upgrade injectors, fuel pump, add manual boost controller, change boost levels..
Street Modified allows you to upgrade your regulator and turbo.

The way SCCA rules work is anything from the previous categories are allowed.

Most of this info came from Snowborder714, thanks guys.

 

[snowborder714]

SP also allows MBC and boost level changes, as noted by Charles above.

 

[Xploitn]

Oh right, that should definitely be noted since that is a rule change that occurred since DG created his DSM classing guide so many years ago! (FarNorthRacing.com)

I am editing my previous post

 

[ACM]

The full rules are online at SCCA.com - The Sports Car Club of America - About. You should always have the latest copy to hand, and keep up with the monthly updates published in FasTrack. Street Prepared rules start on page 90, fueling allowances on pages 102, 15.10.C.1, and 103, 15.10.H.

C. Induction allowances are as follows:
1. Carburetors, fuel injection, and intake manifolds are unrestricted,
subject to 15.10.D. Alternate throttle linkage and connections to
facilitate installation of allowed induction systems are permitted,
but may serve no other purpose. If an induction system item is allowed
to be removed and its original mounting bracket can be removed
by simply unbolting it, the bracket may be removed as well.

Thus AFPRs are legal. 15.10.H refers to fuel lines and fuel filters.

The problem with an MBC is that it holds the wastegate shut at high rpms causing the turbo to overspin, and it self-destructs. You can use an electronic boost controller and map the turbine's rpm, or you can modify the stock boost controller to encourage mid-range overboost whilst still allowing the wastegate to get blown open at higher rpms. If the wastegate stays shut at high rpms the turbo overspins and acts as cork in the exhaust.

The T25 is sized for a 1300cc engine, not 2 litres - the only other 2 litre car the T25 appeared on was the last generation of Cosworth Escort, and it was equally useless in that application too. Ford also used it on the 1600cc 8-valve Escort RS, and outside of that it was a common fitment on Japanese compact cars like the Sunny etc - all 1300cc 16-valve motors.

---It's farfetched but are you suggesting that I run my T25 at 25psi and just replace it as it inevitably fails?
Yes, that's exactly what I'm suggesting. We went through several last season, and probably half a dozen the season before. My latest revesion to the stock boost controller will, I hope reduce this failure rate substantially - I certainly will not be using a (typical) MBC any more.

 

[Scott McIntyre]

Charles, are you using ECMLink's boost control function? I presume you are.

Your post got me thinking that I was probably over-spinning my Big28 trying to get it to hold 24 psi to redline. Might help explain why the turbine wheel got upset and tried to make an escape out the exhaust.

 

[ACM]

Charles, are you using ECMLink's boost control function? I presume you are.

Your post got me thinking that I was probably over-spinning my Big28 trying to get it to hold 24 psi to redline. Might help explain why the turbine wheel got upset and tried to make an escape out the exhaust.

No, just passive boost control now. I have probably missed what/how ECMLink can help ?

I don't have experience running my B28 on anything but pump gas, so I have no idea what it's capable of at those pressures.

 

[Calan]

No, just passive boost control now. I have probably missed what/how ECMLink can help ?

Questions about boost control with V3

 

[CrashGNX]

yeah ECMlink v3 is a wicked mod for us in NASA and SCCA cause its technically using the stock housing and PCB, but we can control everything even boost levels with it cause its using the stock boost solenoid hooked to the ECU and not suffer the classing points kinda evens a bit of the field since our cars are so heavy .