that looks like fun - how much boost did it take?
LX 570 Harrop Supercharger Stage 1 and 2 Impressions (1 Viewer)
- Thread starter boringdriver
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bjowett
Supporting Vendor
That was a TRD/Magnuson TVS 1900 w/ stock pulley and a bad tune (Bully Dog). 99k on the engine, spotless inside.
Wait so was this an off-the-shelf NA tune or does BullyDog make a supercharger tune?
I know a guy who was the gasoline engine tuner for SCT/Bullydog and he is a very good tuner. He’s independent now but is heavily involved in Ford tuning and is one of the few that really knows what he is doing.
bjowett
Supporting Vendor
I’m not entirely clear on what BullyDog system it had (Add on? Flash?), but it was supposed to contain a tune specifically for the TRD Supercharger. Which tune and who wrote are also unknown, but I can ask the owner.
Made my first ECU adjustment today with VF Tuner. Changed the throttle cutover point for the WOT AFR map from 71% on/66% off to 50 on/45 off. The Tundra TRD map uses 40/35 but it also runs a leaner WOT profile.
Based on a quick test drive I can’t get more than 1.5 psi boost before the map cuts over to WOT. For 95% of my driving this will make no difference….
Curious whether adjusting the tire radius from factory to reflect my current larger tires will change anything in fuel consumption reporting etc.
Based on a quick test drive I can’t get more than 1.5 psi boost before the map cuts over to WOT. For 95% of my driving this will make no difference….
Curious whether adjusting the tire radius from factory to reflect my current larger tires will change anything in fuel consumption reporting etc.
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There are other fuel adders besides just the WOT AFR target map
Understood, but looking at the parameter “Commanded a/f ratio” and actual reading from the vehicles lambda sensor I can see the difference before and after I made the change. Before I had to almost floor it to get both ratios to drop down from 14.6/14.7…now they get to the WOT 12.5 and below with moderate throttle.
I was referring to your comment about the TRD tune being leaner. The WOT map is but I’m willing to bet some of the other adders may be more aggressive. I have not looked super close.
g rant
SILVER Star
Hi all -
Considering putting the Harrop SC on my 2016 Land Cruiser with 58k miles. Very mechanically challenged so how important is it to run a tune after install? Had a local shop install it for previous 16+ 200’s but no idea what if any tuning was done or not. Some of this jargon is over my head lol. Also would running 93 be required with it? Thanks to any that can be of assistance!
Considering putting the Harrop SC on my 2016 Land Cruiser with 58k miles. Very mechanically challenged so how important is it to run a tune after install? Had a local shop install it for previous 16+ 200’s but no idea what if any tuning was done or not. Some of this jargon is over my head lol. Also would running 93 be required with it? Thanks to any that can be of assistance!
Yes, run 93, no question.
I think @TeCKis300 put it well a ways back in the thread….it depends. Going to do an occasional drag to 80 but then mostly drive it sanely? Leveraging the charger to recover power usually lost at altitude? Ok without a tune. Planning to haul max gross wt trailers at high speed and don’t plan to slow down for hills? Maybe worth considering a tune in that case.
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Did you end up installing yet? Anyone else tuned the +16 with VF Tuner yet?
How was the long tube install? I haven’t seen many people running long tubes on the 570.
Lexus LX570 5.7L V8 Long System
This system fits the Toyota Land Cruiser and Lexus LX570 for the model years 2007 through 2021. Available with your choice of 1-3/4" or 1-7/8" primaries. Note: Specify With or Without Emissions in the Notes to Seller at checkout to ensure you get the exact system for your specific application...
americanracingheaders.com
Definitely not cheap! How does it sound compared to stock.
Jason Andrews
Modaholic
Yes, tuned since 10/23; Harrop blower since 10/22.
There is a coupe YT videos of it on the dyno with the headers and stock exhaust in this thread or another similarly titled one.How was the long tube install? I haven’t seen many people running long tubes on the 570.
Lexus LX570 5.7L V8 Long System
This system fits the Toyota Land Cruiser and Lexus LX570 for the model years 2007 through 2021. Available with your choice of 1-3/4" or 1-7/8" primaries. Note: Specify With or Without Emissions in the Notes to Seller at checkout to ensure you get the exact system for your specific application...
Definitely not cheap! How does it sound compared to stock.
I am fairly new to the LC 200 and tow a 4k lbs Conqueror UEV490. Just purchased a 40 gal LRA tank, and a wholesale auto trans cooler. The truck already has front/rear bars, winch, Dobinson's 3" lift etc. Extremely well taken care of, I got it at 82k and just rolled 100k. We do 6-8k mile trips every summer around the U.S. For 2026 we are going to Alaska/NT (TUK) from S. Texas and considering if a supercharger is a smart move for my use case. I drive it daily and am a former tech so I'm comfortable with being realistic and solving problems. This thread has kinda died.... Looking to see if there any long term examples and high milage use of heavy 200s with SC towing...
Probably more recent and relevant discussion on this thread from this week.
What are you doing for load leveling in the rear? I know the UEV tongue weight isn’t much over 300 but after gear and whatnot on a trip that long you may suffer from some negative rake. I’d be working on that and windshield protection as well for that particular trip.
What are you doing for load leveling in the rear? I know the UEV tongue weight isn’t much over 300 but after gear and whatnot on a trip that long you may suffer from some negative rake. I’d be working on that and windshield protection as well for that particular trip.
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Yes I was (neg rake) between 7.8 and 10 MPG.. but I don't give damn about MPG, I'm realistic . So added 500LBS in Fuel and the trailer would be ridiculous... I have bought a KDSS kit to compensate for lifts, and XHD Dobinson rear springs (1100 lbs constant). the end goal is to compensate for the already heavy rear end and also give the KDSS some support to be more flexible.
As far as the rest of the rig for the trip:
- I will be hauling two spares, the trailer will be converted to 5 lug LC pattern and I will carry a wheel adapter for 6 lug Toyota
- Expel sells a product to offer additional protection, its applied to the outside, fingers crossed
- I also will be using a rock tamer mud flap set between the LC and conqueror, and wide front flaps just for the trip.
What am I missing, there probably is a list... that is why I am planning a year out
I’m interested in your 5 lug solution, I entertained this briefly on mine but decided to keep the Dexter axle set up as their 5 lug options didn’t seem to be up for the weight requirements.
Just got to Etrailer and buy the right drums for your diameter and brake shoe width. My previous Conqueror was converted to Jeep 5 lug, I changed the drums to Toyota 6 lug to match the GX470.
Another trail tip is if you buy a cheap lug adapter for LC 200 5 lug to Toyota 6 lug can get you out of a jam in a pinch if a pal has a chevy or 6 lug Toyota. they are cheap on Ebay and they only get used if you are out of options...
After re-reading.... you bring up a very valid point!! Looking at all the 5x150 drums max load is 3.5 and my Conqueror is max about 5k... this is an issue.. thankfully I still have my 6 lug equipment and am glad I haven't experienced a bad situation.
