RaphyV

There's a post where another member asks about an auto manual swap on his 98 SC400 vvti, and I didn't wanna threadjack because wasn't relevant to his post. So thought I'd start a new thread.

I've asked before in an older thread if it was legal to swap the ecu/engine/tranny from a 5spd IS300 into a 99+ sc300 because the 99+ SCs didn't come in a 5spd (https://www.clublexus.com/forums/per...ifornia-2.html). I was told that I could use the SC ecu/harness and a 5sp (presumably a w58) and it would work.

Then I come across the post about an auto to manual swap on a 98 SC400 (https://www.clublexus.com/forums/per...me-advice.html), and read from there that another member did the 5sp swap on his 97 SC300 but couldn't pass smog because of a code from the tranny prevented him from passing.

My understanding from this website (http://www.arb.ca.gov/msprog/aftermkt/replace.htm?PF=Y) is that an ecu/engine/tranny from a 5spd IS300 would work. But I am new to all this and I'm trying to learn as much as possible.

Did a search and couldn't find anything relevant to my question, so I thought I'd ask:
1.) Will my proposed swap work?
2.) Is it a legal swap?
3.) If not, do I have any other options into converting my 99 SC300 into a 5 speed and still pass smog?

I can't afford to sell my car for an IS or another SC with a 5 speed already, so those two aren't options.

Any insight for those that have traveled down this path is GREATLY appreciated.

SpiderN9NE

iTrader: (8)

bump for some info on my situation. would there be a check engine light on the the 99 sc300 vvti if i did a w58 swap out of an sc300. the reason im askin is because its obd2 and i think the ecu will read that the trans is not there.

jadu

iTrader: (42)

From what I've read about cali's smog regulations, BAR, etc.. a USDM IS300 engine swap into a 99 is legal.

SpiderN9NE

iTrader: (8)

well im just in for info on a w58 into a vvti 99 sc300 with my original ecu. is there any problems ill run into like check engine light. i live in VA.

TURBO819

iTrader: (5)

I did a W58 Swap in a 95 SC300 and in a 99 SC300. See Links.
https://www.clublexus.com/forums/per...peed-swap.html
&
https://www.clublexus.com/forums/per...pecialist.html
I was going to try and swap the ECU out of my IS300 and into my SC300 but then I decided to do a 2jzgte Engine Swap and never look down this route for answers. In the spring when the weather breaks. I will swap the SC300 ECU into my IS300 with the Chip in the key and see if any Codes are given off. I don't know 100% but the (Evaporative System & Drive by wire) might have some differences. Maybe someone can shade some light on this???

Asha'man

iTrader: (1)

The IS tranny is a W55, not as strong as a W58, just FYI.

madmax98

R154 is the way to go, specially if you plan on boosting the car. Of course the V160/161 is the best if you can afford it.

SpiderN9NE

iTrader: (8)

Never said anything about swapping a w55 did i??

Thanks for the info i wish you had of went further, LOL. and figured it out. i cant find anything.



Yeah i know r154 is the way to go. thats not my point though. what did you do in your situation? i see you have have 98 vvti obd2 with swap. did you get any codes? and if so how did you fix this?

edit: i see you sig. I guess the EMS maybe. setup sounds good by the way

madmax98

[QUOTE
Yeah i know r154 is the way to go. thats not my point though. what did you do in your situation? i see you have have 98 vvti obd2 with swap. did you get any codes? and if so how did you fix this?

edit: i see you sig. I guess the EMS maybe. setup sounds good by the way[/QUOTE]

I got a code for not having the tranny I didn't care about the Engine Light, the car drove normal + the fun of shifting

I have AEM EMS now, but i still have the stock ecu on the car to control anything other than ignition and fuel. PM me or post if you want more specific info
Thanks for the compliment, a lot of work and thought wee put into it.

SpiderN9NE

iTrader: (8)

ok what about using a ECU from a 5spd is300 on a w58 5spd swap into my 99 sc300. would that work because it wouldnt be looking for auto solenoids.

Or could i just remove the solenoids from the auto and leave them plugged in to fool the auto ECU from the SC300. or is that even possible. i dont think i have an overdrive light. and theres a fix for the memory seat, i think theres a wire to cut but i dont know which. i just want to avoid the check engine light.

madmax98

98+ SC300's have the same ECU as the IS300 2001

SpiderN9NE

iTrader: (8)

^^^^^^Ok they have five speed versions though which we dont. how is that working or do they have 5spd ECUs and Auto ECUs as we do. So what im saying is will it work me using a 5spd ECU from the is300.

or are you sayin all are the same like the is300 2001+, auto and 5spd will be the same as are 98+?? if you are sayin that how is that possible that?

madmax98

No, manuals will be different. I know auto 2001 is300 ecu is exactly the same as the 98+ SC300's. I'm just not sure if you can plug in the manual one. In theory, it makes perfect sense and should work 100%. I'm just not 100% sure, so i don't want to mislead you with uncertain info.

SpiderN9NE

iTrader: (8)

Thanks i understand your concern with the info. basically if the auto is the same thats a good start. because there 5spd should be that much similar. so then it would be just the matter of speed sensor and reverse light and and neutral safety switch, in theory.

So my next question would be did you have plugs already underneath the car where you used for your speed sensor and such stated above. when you did your swap. or how did you get around that? sorry for the questions but your serious helping alot.

EDIT: dang i forgot to realize that the autmatic had that stuff there. and the rest would be regular auto to manual. I was thinkin to hard. LOL or not enough. sorry

Asha'man

iTrader: (1)

What? It is.