What Next? Headers, TC, other ideas?
09-26-14, 08:39 AM
#31
One thing I wanted to mention is that the SRT intake is a drastic power increase from the K&N you have - I did it and it was a huge difference.
Also - not too sure that the 2JZGTE is a plug and play for the GS400 - in a GS300 it is a straight plug and play (you need to jump only one wire from the igniter).
Also - not too sure that the 2JZGTE is a plug and play for the GS400 - in a GS300 it is a straight plug and play (you need to jump only one wire from the igniter).
09-26-14, 11:53 AM
#32
I have had my PPE headers, higher stall (2400) TC,IPT valve body, and supra LSD (kept stock 3.23 gearing) installed for about 3K now.
This combo has completely transformed the car.
As previously mentioned the headers waken up the 4.3\4.0. It feels a ton more responsive throughout the whole RPM range.
The Valve body\TC make the transmission much more "alive" also.. the shifts are crisper and the torque curve seems more suited for each shift point.
The limited slip is just the icing on the cake as it not only gives much more traction, its just a lot of fun!
Less of the intrusive traction control module is needed.
This combo has completely transformed the car.
As previously mentioned the headers waken up the 4.3\4.0. It feels a ton more responsive throughout the whole RPM range.
The Valve body\TC make the transmission much more "alive" also.. the shifts are crisper and the torque curve seems more suited for each shift point.
The limited slip is just the icing on the cake as it not only gives much more traction, its just a lot of fun!
Less of the intrusive traction control module is needed.
09-26-14, 12:49 PM
#33
I have had my PPE headers, higher stall (2400) TC,IPT valve body, and supra LSD (kept stock 3.23 gearing) installed for about 3K now.
This combo has completely transformed the car.
As previously mentioned the headers waken up the 4.3\4.0. It feels a ton more responsive throughout the whole RPM range.
The Valve body\TC make the transmission much more "alive" also.. the shifts are crisper and the torque curve seems more suited for each shift point.
The limited slip is just the icing on the cake as it not only gives much more traction, its just a lot of fun!
Less of the intrusive traction control module is needed.
This combo has completely transformed the car.
As previously mentioned the headers waken up the 4.3\4.0. It feels a ton more responsive throughout the whole RPM range.
The Valve body\TC make the transmission much more "alive" also.. the shifts are crisper and the torque curve seems more suited for each shift point.
The limited slip is just the icing on the cake as it not only gives much more traction, its just a lot of fun!
Less of the intrusive traction control module is needed.
09-26-14, 04:56 PM
#34
If you think the headers wake the car up, wait until you throw a 3000 stall torque converter combined with the Supra 3.73 gears! This is an even more dramatic difference IMHO.
Obviously they don't add any power but it multiplies the power being made and puts it to the ground...when you're not sideways that is. Lol 😃 Unfortunately, parts and install for this combo will probably set you back close to $2500. The whole tranny has to come down and apart to install the TC.
Obviously they don't add any power but it multiplies the power being made and puts it to the ground...when you're not sideways that is. Lol 😃 Unfortunately, parts and install for this combo will probably set you back close to $2500. The whole tranny has to come down and apart to install the TC.
09-26-14, 08:21 PM
#35
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What would you consider a good price? There's one close to me for sale for around $500 from a Supra breaking yard; wondering if I should jump on it or wait it out for a cheaper one.
09-27-14, 06:04 AM
#36
All, IMHO I would either do only the TC or both TC and LSD at the same time. The TC by far will make the most dramatic difference; both is the ultimate but I feel you need the steeper gears to get that increase acceleration in every gear. Keeping the same 3.26 gears will feel exactly the same under acceleration. Only you'll have added grip from the LSD which you WONT NEED unless you have the high stall torque converter or putting out a good amount of power over stock from added mods. If you don't have either you should NOT have traction issues and adding only a 3.26 LSD will be a WASTE. trust me on this. If you are under say 280whp def get a high stall TC of around 2800-3000rpm stall. Then get the 3.73 geared LSD (either from a Supra TT or the RMM one sold by L-Tuned parts...however they're the same).
If you KNOW you will go forced induction one day then yes, stick to the 3.26 stock gearing when getting your LSD. Other than that get the 3.76 gears, you WILL feel the difference in acceleration! The only downfall regarding BOTH of these mods is reduced mpg (about a 2 mpg drop) and your tranny will shift to 3rd at 58mph with the steeper 3.76 gears. As opposed to 62mph with the stock 3.26 gears. So, technically, if measuring exactly to 60mph your car will be slower. But it will only be slower exactly to 60; all other speeds will be quicker. AND if you also have the high stall TC as well it will STILL be quicker to 60 because the high stall TC would give such an incredible jump off the line that even though you'll shift a little sooner you'll still be way ahead by 60.
. This is why I DO NOT recommend only going with the LSD mod by itself (regardless of gearing used).
Sorry for the long-winded post. Just trying to help out as I've been there already. Good luck all!
If you KNOW you will go forced induction one day then yes, stick to the 3.26 stock gearing when getting your LSD. Other than that get the 3.76 gears, you WILL feel the difference in acceleration! The only downfall regarding BOTH of these mods is reduced mpg (about a 2 mpg drop) and your tranny will shift to 3rd at 58mph with the steeper 3.76 gears. As opposed to 62mph with the stock 3.26 gears. So, technically, if measuring exactly to 60mph your car will be slower. But it will only be slower exactly to 60; all other speeds will be quicker. AND if you also have the high stall TC as well it will STILL be quicker to 60 because the high stall TC would give such an incredible jump off the line that even though you'll shift a little sooner you'll still be way ahead by 60.
. This is why I DO NOT recommend only going with the LSD mod by itself (regardless of gearing used).Sorry for the long-winded post. Just trying to help out as I've been there already. Good luck all!
Last edited by Rock-a-Lex; 09-27-14 at 06:10 AM.
09-27-14, 08:31 AM
#37
Rock.. good post and I mostly agree, but I had some traction issues without any mods at all, lol. You were never able to have a one wheel wonder burn out with just your stock 400?
The LSD will help with traction IN ALL situations. When in spirited driving the factory traction control is not intervening as much.. and when its turned off its very easy to get a drift going. Makes the car much more confident in entering and exiting the apex.
And remember for all you 4.3 guys out there.. anything higher than 2500\2600 may produce a CEL from your TQ converter mod.
From the research I did it looked like ~2400 was the sweet spot over factory that is why I went this route.
The LSD will help with traction IN ALL situations. When in spirited driving the factory traction control is not intervening as much.. and when its turned off its very easy to get a drift going. Makes the car much more confident in entering and exiting the apex.
And remember for all you 4.3 guys out there.. anything higher than 2500\2600 may produce a CEL from your TQ converter mod.
From the research I did it looked like ~2400 was the sweet spot over factory that is why I went this route.
09-27-14, 11:22 AM
#39
I have the PI TC from my 02 gs430 2800stall. Don't know if it was just the car or the way the TC was built but It never threw a cel in my car. Definitely best mod for these cars aside from FI
I will have this unit for sale sometime soon (whenever I get around to finally posting all of my parts for sale)
I will have this unit for sale sometime soon (whenever I get around to finally posting all of my parts for sale)
09-27-14, 03:01 PM
#41
Rock.. good post and I mostly agree, but I had some traction issues without any mods at all, lol. You were never able to have a one wheel wonder burn out with just your stock 400?
The LSD will help with traction IN ALL situations. When in spirited driving the factory traction control is not intervening as much.. and when its turned off its very easy to get a drift going. Makes the car much more confident in entering and exiting the apex.
And remember for all you 4.3 guys out there.. anything higher than 2500\2600 may produce a CEL from your TQ converter mod.
From the research I did it looked like ~2400 was the sweet spot over factory that is why I went this route.
The LSD will help with traction IN ALL situations. When in spirited driving the factory traction control is not intervening as much.. and when its turned off its very easy to get a drift going. Makes the car much more confident in entering and exiting the apex.
And remember for all you 4.3 guys out there.. anything higher than 2500\2600 may produce a CEL from your TQ converter mod.
From the research I did it looked like ~2400 was the sweet spot over factory that is why I went this route.
Everyone should get the steeper gear setup for better performance and quicker shifting. It pulls SO NICE on the highway.
09-29-14, 01:25 AM
#42
Great info Rock, I always look forward to your input. Thanks for sharing
Thanks for the info man, I remember reading something about the check engine light coming on also when you use higher stalls.
