Flash tuning results: Billet DR650s

[Greg E]

Continuing from this thread:

Flash tuning results on a stock 99 VR4 - 3000GT/Stealth International Message Center (http://www.3si.org/forum/f1/flash-tuning-results-stock-99-vr4-515002/)

The car has undergone a lot of maintenance. Been slowly collecting these parts for years! Feels strange having an empty closet again... BUT it feels good to finally build the car of my dreams!

Pretty much everything attached to the engine has been replaced:

Timing belt & accessories
Water pump
Crank pulley
Timing belt + accessory tension & idler pulleys
Thermostat
Fuel filter
Alternator
AC compressor
Radiator & hoses
New coil pack, plugs and wires
Poly motor mounts
ABS delete with OEM parts
New brake and clutch master cylinders
New OEM Throttle body
Krank Vents (small style)
Megan coil overs with Maximal control arms (thank you Paul Dawson!)
Flow matched and remanned 560 EVO fuel injectors (thanks evotuner!)
Denso 310lph (NOT hotwired)
IPS downpipe with custom Billet muffler in place of a cat
IPS quad tip exhaust (coming soon)
Billet DR650s
Forge Wastegates
Forge BOV
EVO 8 MAF
EVO 10 Map sensor (installed before the build)
LC1 wideband

I'm still running the stock air box, intake tubes, innercoolers & pipes (even the plastic Y pipe). All emissions equipment are still intact and functioning. Aside from the wheels and suspension, this car looks completely stock.

Here's the car before the build at NG:
http://a5.sphotos.ak.fbcdn.net/hphotos-ak-snc6/264883_2198213996022_1267430084_2584052_5166234_n. jpg

...and here it is now!

http://a4.sphotos.ak.fbcdn.net/hphotos-ak-ash4/293227_2344887262762_1267430084_2795390_4649694_n. jpg
http://a1.sphotos.ak.fbcdn.net/hphotos-ak-ash4/309591_2344889342814_1267430084_2795397_6566874_n. jpg

What a difference! ;)

This is my exhaust currently. It's an IPS downpipe which I've modified to accompany a 3" Bullet muffler from Buschur Racing. BR makes these Bullet "cat" mufflers for the EVO and it slipped over the IPS downpipe almost perfectly. I had to notch the muffler to clamp onto the pipe better but that was easy with an air grinder. Then I had to cut 19" off the IPS pipe with a SS pipe cutter.

http://a2.sphotos.ak.fbcdn.net/hphotos-ak-ash4/308773_2320453851942_1267430084_2761979_2297456_n. jpg

This muffler just BARELY fits under the car. I had to remove the stock underbody heatshield for it to bolt up, but if you're running stock motor mounts, it would hit the bottom of the car for sure. I wish I had the skills to modify the downpipe to sit 3/4in lower than it does to give more room for the "cat".

Had a nice surprise when tearing apart the car too. It always had some idle issues, even threw a CE light for "Idle System Fault". I cleared it up fairly well playing with the timing & fuel tables as well as adjust the BISS, but whenever the temperature outside was above 85ish degrees, it never wanted to idle while cold.

Found out why... Not sure how I never noticed this before:
http://i.imgur.com/O9RTW.jpg

Good thing I had an EVO 8 MAF to replace it.... :rolleyes:

Continued in next post!

[Greg E]

For a while now, I've been testing the EVO X map sensor in my car. The idea is to datalog boost pressure using EVOScan and the flashable ECU. This is the first baby step towards things like speed density, stock boost gauge mods, ECU based boost control...

The OBD2 cars have a 1 bar MAP sensor that can only measure up to 2.2 psi of boost and is located on top of the intake plenum. The ECU mainly uses this to operate the EGR. The EVO 10 uses a 3.25 bar MAP sensor that can measure up to 32 psi of boost. This sensor is nearly identical in appearance to the stock sensor, so it can be easily swapped in for some plug and play fun.

If you pop off the stock sensor, you'll see a space with a small hole. I believe this cavern is just an area to keep air turbulence away from the sensor so the readings are more accurate.

http://i.imgur.com/RvX8N.jpg

Here are the 2 sensors side by side. Note: the EVO 10 sensor is the one with the yellow cap on it.

http://i.imgur.com/Jwdpv.jpg
http://i.imgur.com/ZcMiZ.jpg
http://i.imgur.com/aaFEu.jpg

No one would have a clue...
http://i.imgur.com/UE3Ad.jpg

Part number for this sensor is 1865A052 and it's available for $145.16 plus shipping thru MitsubishiParts.net - Your #1 Source for OEM Parts and Accessories (http://www.mitsubishiparts.net/cart/?pn=1865A052)

Continued....

[Greg E]

I'm still using the stock BCS to control boost in my car. Setting WGDC to 100% on 9Bs with the stock wastegates only netted me a 16psi spike, falling to 11 at the redline.

Felt experimental and popped out the little restriction pill from the BCS solinoid like the 1G guys do for the free boost mod. Info on that is here:

Stealth 316 - Free Boost Mod for 1991-1993 3000GT/Steath (http://www.stealth316.com/2-freeboost.htm)

Much to my surprise, eliminating this pill allows a lot more that I anticipated. On my first pull, leaving everything at 100% WGDC, I saw 30psi before fuel cut!! I ended up with dropping it all the way down to about 64% to get 19psi with my Forge wastegates.

Spool-wise at 100% WGDC, the new Billet 650s see 27psi by 3750 rpms. Keep in mind I'm running the stock airbox and "stock style" MAF too! Gotta LOVE these turbos!!!

http://i.imgur.com/SoPz4.jpg

Kinda scary when the tires slip in 3rd gear while you're moving... Fuel cut spoiled that fun. Although my knock sensor didn't care for that kind of fun either.

I have spool tuned a bit more conservatively now where I see 19psi by about 3500. I will play with this more after I get my replacement wideband and a fresh tank of 93.

Horsepower-wise.... The results were quite a bit lower than I anticipated but not horrible. This is the previous tune on stock turbos with the new tune on the 650s.

http://i.imgur.com/8nLHv.jpg

How about that? Not even 100hp over stock turbos.... Don't get me wrong! The car still pulls great, but it's not what I was hoping.

To be honest I am VERY disappointed in the car. Come to find out my wideband sensor is dead so that made tuning a guess... The car also has become hyper sensitive to knock. Even at measly 19psi, I can't run anymore than 11 degrees of timing due to excessive knock. I'm hoping this is just a result of bad gas from the car sitting for so long or maybe my AFRs are too lean from a lack of a rewired pump.

For now the car will sit till I get my replacement sensor and catback from IPS.

Stay tuned!

[green-lantern]

Great info Greg, thanks for posting it here. :)

[mb3000]

Interesting read as always!

[VR-4 0wnz j00]

They are supposed to support ~550+ awhp but I've yet to see it. Would be nice to see someone with supporting mods dyno them on pump instead of just slapping them on a stock car with injectors and a piggy back.

[Greg E]

They are supposed to support ~550+ awhp but I've yet to see it. Would be nice to see someone with supporting mods dyno them on pump instead of just slapping them on a stock car with injectors and a piggy back.

No problem! Can I take a loan from you? :lol:

Matt M insists one of my biggest issues is restriction from the stock airbox. Ive got a Buschur Racing intake for the EVO MAF on the shelf which I'll slap on after the replacement wideband shows up. I'm also waiting on a rewire kit from Summit Racing which will allow me to keep the stock fuel pump resistor.

[Hans@GZP]

Are you running some colder plugs in there now?

[Greg E]

Are you running some colder plugs in there now?
Yeah. NGK coppers 1 range cooler gapped at .022-.024

[HilbillyHomeboy]

Phil (boostedzx) made like 440-450 on regular DR-650's with a stock airbox, several years ago. Lack of timing is killing your power, not that 390 is bad by any means. :)

Jeremy

[Greg E]

http://i.imgur.com/FEUtR.jpg

Little better results today.

Fresh tank of 93 and dropped the boost to 15psi. Also kept a water bottle handy to spray water onto the innercoolers after each pull.

I'm not sure what it is about the gas around here, but it just flat out SUCKS! Anything more than 15psi and it's knock city. Even with this tune I'm still seeing 4 counts here and there. Most timing I can run is 19degrees. Would be nice to run more to keep that torque curve a bit flatter.

There no race gas nor e85 anywhere around here either BUT at work we have an unlimited supply of 50/50 Meth/Eth mix so I'm going to setup an alchy system in the near future.

Wideband still doesn't work either. :rolleyes: Not sure what's up with that yet. Think it's my USB to serial adapter.

Stay tuned!

[Simace]

Hey Greg, you using VirtualDyno app to go over your logs? If so, what are your settings for the vehicle (ie. weight, gearing etc)?

[Simace]

I posted too soon. I took a look at your link and see that you're using VDR. Have you tried using Virtual Dyno (http://www.bradbarnhill.com/projects/VirtualDyno/)? It is very intuitive and very easy to use, and does not require you touch the csv files created by evoscan....

I'll post up a dyno chart of my 16T (ECUFlashed) '99 in a minute...

2 third gear pulls..
http://i139.photobucket.com/albums/q317/simace/3rd-Gear-Pull-Comparison.jpg

[Greg E]

I posted too soon. I took a look at your link and see that you're using VDR. Have you tried using Virtual Dyno (http://www.bradbarnhill.com/projects/VirtualDyno/)? It is very intuitive and very easy to use, and does not require you touch the csv files created by evoscan....

Yep, who do you think helped Brad set it up for the 3/S. ;)

[green-lantern]

:lo5l:


Thanks to Greg! I'm rolling with a flashed ECU. The man knows his shit! Much more cool stuff to come, keep up the good work Greg!

[Jesters Deadd]

Cool, good to see you coming along on your 99. I've been wanting to see someone put bigger turbos on a flash tuned 99. It's cool you are working on the speed density too. looking forward to updates.

[Jesters Deadd]

Are you running two wb lc1s or just one?

[Greg E]

Are you running two wb lc1s or just one?

Just one.

[Greg E]

I'm sitting here thinking about the devilsown alchy kits. They have a dual nozzle system specificly for the 3/S. Obviously I'll be using the washer bottle as a storage tank since its sleeper and there's a dash light for the fluid level when it gets low.


Since these turbos are insta-spool I'll wire it up without the progressive controller and just have it spray full on above 100 engine load. To trigger the pump, instead of using their map sensor, ill just wire it to the fuel pump relay in the engine bay. Basically the ecu will be triggering the pump in open loop.


Then to make it really sleeper I'll use black anodized braided lines so they stay hidden in the engine bay.


There's one issue I haven't figured out yet (aside from how I can afford it) and that's where to tap the nozzles. I don't know if its very wise to try and tap them into the stock plastic y-pipe... I could make some kind of metal plate that will sit inside the pipe as reinforcement but that maybe more cumbersome than not having it.

[green-lantern]

I have a meth kit and I'm sitting here looking at the nozzle and I think it will be fine in the plastic Y pipe.

[Jesters Deadd]

I'm sitting here thinking about the devilsown alchy kits. They have a dual nozzle system specificly for the 3/S. Obviously I'll be using the washer bottle as a storage tank since its sleeper and there's a dash light for the fluid level when it gets low.


Since these turbos are insta-spool I'll wire it up without the progressive controller and just have it spray full on above 100 engine load. To trigger the pump, instead of using their map sensor, ill just wire it to the fuel pump relay in the engine bay. Basically the ecu will be triggering the pump in open loop.


Then to make it really sleeper I'll use black anodized braided lines so they stay hidden in the engine bay.


There's one issue I haven't figured out yet (aside from how I can afford it) and that's where to tap the nozzles. I don't know if its very wise to try and tap them into the stock plastic y-pipe... I could make some kind of metal plate that will sit inside the pipe as reinforcement but that maybe more cumbersome than not having it.

Do you really want to keep the plastic y-pipe? The black aluminum y-pipes look near stock. Plus can a plastic y-pipe hold that much psi? Plus aren't you worried it will pop off under boost?

[Greg E]

Do you really want to keep the plastic y-pipe? The black aluminum y-pipes look near stock. Plus can a plastic y-pipe hold that much psi? Plus aren't you worried it will pop off under boost?

If it's installed properly with a good gasket and a tbolt clamp the stock piece is just as good as an aftermarket one.

[mojo3120]

If it's installed properly with a good gasket and a tbolt clamp the stock piece is just as good as an aftermarket one.

Tennis ball mod ftw! :coo3l:

[Greg E]

Tennis ball mod ftw! :coo3l:

:lmao:

I remember when people used to do that.

[mojo3120]

I remember when people used to do that.

I ran around for like 4 years w/ my tennis ball! Now a days you can get a Y-Pipe for just about the same cost as a can of tennis balls :p

[Greg E]

I ran around for like 4 years w/ my tennis ball! Now a days you can get a Y-Pipe for just about the same cost as a can of tennis balls :p

When my savings are rebuilt I'll be purchasing a ETS FMIC. Spending any $$ on a y-pipe is a waste to me.

[J. Fast]

What is this "tennis ball mod"? I haven't seen that one before. I have however seen the "golf ball mod". Ha

[HilbillyHomeboy]

Jamming a tennis ball between the y-pipe and the battery to prevent blow-off.

Jeremy

[FeaRpb]

Tennis Ball Mod is, you place a tennis ball between the y-pipe and battery so the y-pipe has no room to pop off.

[TurboSinceBirth]

Tennis Ball Mod is, you place a tennis ball between the y-pipe and battery so the y-pipe has no room to pop off.

Jeremy beat you to it. :) Anyone remember the D battery in the BOV hole on the stock air bubble? Lol

[FeaRpb]

I may have that going on right now...

[Rebel]

Jeremy beat you to it. :) Anyone remember the D battery in the BOV hole on the stock air bubble? Lol

No...don't remember that at all.....lol still rockin the D battery.

[green-lantern]

No...don't remember that at all.....lol still rockin the D battery.

Absolut vodka cap fits perfect. lol