Hello all,

in the near future my mechanic is in the process of doing my clutch and lightweight flywheel on my r53 . Now I have been considering the quaife lsd for a while , but am also seeing my intake Temps go up quite a bit now in the summer months and was wondering if I would benefit better from a meth kit instead ? ( used for cooling for the moment and perhaps in near future add some meth)
I do not track the car and it is daily driven . Some people really love the lsd but if I don't track the car I am not sure i will really enjoy it to its full potential .

In your opinion would you guys go with lsd over meth kit ? Or will I benefit more from meth kit ?

Car has supercharger 16% pulley, intake, 4-2-1 header, ati crank pulley, newman ph2 , 380 injectors and is tuned , gp intercooler .

 

IMO, at your mod level, the Quaife first (unless it's an upgrade from the factory LSD, then don't bother, factory is very capable)

​​​​​​Then just do a simple I/C sprayer until you get the funds to do a W/M kit.

 

Big valve head.....sprintex....go for the constant power. I'd skip the meth for now and worry about utilizing what power you have for now.
could buy my 550cc injectors and custom bolton 3in intake and throttlebody.
they say the 380cc max out pretty much with an 11% pulley and jcw exhaust alone put them at almost max duty cycle..I'd atleast run 440cc injectors juuuuuuuust to be safe.

 

unfortunately my r53 did not come with factory lsd. I have read much feedback from peeps raving about how the lsd has changed the way the car drives. My worry is that I do not track the car so I wonder if I would be utilizing its potential on spirited daily driving .

I have tought on the intercooler sprayer , but for some reason am not too keen on having water all over the intercooler .

 

Thanks Adam for the input . unfortunetely funds are not huge right now and not sure i would want to replace head and supercharger right now.

Trying to decide if the lsd will serve my car better for pulling , or the cooling affect of the meth kit right now during summer will help with heat soak and prevent ecu from pulling timing

 

On my old '03, installing the Quaife was a helpful improvement in putting down the power. In day to day driving it help a lot; I never used it on the track unfortunately, but accelerating from a stop, especially taking turns transformed how quickly I'd accelerate.

 

Thank you. I know my mods are quite mild compared to some of the others on this board, but it would definetely be nice to be able to transfer all available torque down to the pavement when needed , and to be able to exit the twisties without letting go of the gas pedal .

 

I remember reading that the lsd may may be an issue in snow . ( not sure where anymore ) . Do any of you run the lsd in snow and did u find it caused more tire spin instead?

 

Yes I encounter snow up here in Northeastern Mass. The LSD is more essential in low-traction situations than anywhere else.

The good news is that the LSD ensures that BOTH front wheels work together, so hill climbing or getting out of a driveway is much easier.

The care is simply the same, as BOTH front wheels transfer power, if you hit poor traction on an on-ramp the under-steer is immediate, bilateral, and profound! Of course if that is a problem then you were traveling too fast for conditions....

After adopting the Quaife I leaned that the easy way two days later on a damp road with over 250hp, entering Route 128. The car jumped over about a foot from where I thought it should be before I could unsqueeze the accelerator.

Lesson leaned, and it has been all upside since that moment....

Cheers,

Charlie

 

thank you for theninput Charlie. Will definetely keep the warning in mind if I go the route of the lsd. I do run winter tires in the winter, but have come across some hills in winter that I had to avoid due to the wheel slip.

 

Should have made it a poll... but, LSD should be the absolute next purchase.

If you enjoy driving the car left or right, LSD.
If you only enjoy driving the car in stop-go traffic, meth kit.

 

yes perhaps should of made a poll. Yes of course I do enjoy driving the cartho hence why I am leaning towards the lsd. Also having the clutch / flywheel redone now is the perfect timing .

Issues that where I live there is quite a hit of traffic and with the hot temps now , I feel like the car may be getting sluggish after a while of hot driving. Seems like I may have to start saving for both .

I don't think that my stock r53 head is helping with the heat being pushed out quickly out the exhaust and keeping the chamber a tad cooler

 

Geez. Maybe I need to be monitoring my intake temperatures.

I live in Phoenix, AZ and daily drive my R53 to work (26 miles round to trip), mostly on the freeway where traffic is moving 65+ mph usually. In that context, aside from in the morning on the freeway on-ramp, I don't have the opportunity to feel if my car is sluggish or not.

For that reason, I vote for LSD.

 

the lsd mod is def a very attractive upgrade .

here where I'm at there is a lot of stop/and go traffic daily. With the hot temps it def does not help. Have heard my high speed fan go on quite a bit while on the interstate stuck on these traffic jams .

 

I'm in a similar boat to you in terms of the mods that I have done and (I think) the kind of driving I do. My car will never be on a track. I like to drive quick, but I don't care about fast. However, my car a daily driver is not. Were it my money, I would put it elsewhere. Slightly lower temp thermostat? Replace the damper/pulley?

You didn't mention an exhaust - sure you probably have done that already. But if not... Rear sway bar? Suspension refresh including new bushings? Brakes? Better places to spend the money, IMO.

Meth. LOL. Reminds me of an awful campaign SD did to curb meth use a few years back. Horrible problem. Not the best approach. They ended that campaign rather quickly...

 

Yea I am the same , will never track the car and do enjoy spirited driving .
I have already upgraded the crank dampened to an ati . Also i do Have the magnaflow cat back exhaust . Did quite a refresh on the suspension last year ( koni fsd shocks, poly bushings on the front control arms , new inner/outer ball joints .
so the car is quite where I would perhaps like it at. I would like the rear sway bar at some time also in the future . Reason that really made me think about the lsd is that my mechanic willbe doing a new clutch and lightweight flywheel soon , so it would be the perfect time to get it done toguether . Just not sure costwise if I would benefit more from the lsd or meth kit on my build

 

you plan on anything more powerwise I'd ditch those 380s and definitely step up to 440s. On the stock jcw setup like the 11% pulley , exhaust and little intake flapper . Those alone were puting the 380s into 98% max duty cycle already.
I actually did alot of research on fueling in these cars and they tend to suffer from under fueling.. some guy actually did ALOT of testing with hard data might I add and he'd posted it all up..
imo like AngryScotsman said , lsd if you twist and meth if you do more strait line stop light to stoplight stuff.. imo. I'd get 440cc injectors and an aem meth kit ( next on my list too )..

 

Thank you Adam for the info. I actually just got theses original 380 injectors when they went on sale . I was running the audi bosch 380 injectors recommended by adrian , but I was getting quite a few overfueling issues to the point the car misfired and oil was highly mixed with fuel.
once swapped out the car seems to run better and afr is sitting better . Now to be honest I am not sure at what percentage the 380 are running with my mods.

I will try to dig up some forum posts on injectors and try to educate myself better with the injectors. From what I remember from my past research I was under the impression that for my mods the 380 cc were enough, especially if I'm not living in the higher rpm range all the time .
part of the reason I was considering meth is because I feel ike the car is heating up quite quick and it may be due that I am running higher revs than usual to get car going . For example at 100 kms/hour i am running in 4th at around 4000 to 4500 rpm . I think this may be due to a slipping and tired clutch .

 

Check these out......imo I'd get bigger injectors along with ANY power adder you get..if I were you I'd go 550 because they support your lowside hp with no drive ability issues but yet will handle anymore mods you can put on..
i ran my 550s from mild Bolton now to full build and they ran perfectly...I know in the post it's discussing e85 but it still give good insight in on injectors and the hp chart calculator thing is pretty accurate..

https://www.minitorque.com/threads/m...tested.206363/


https://fuelinjectorclinic.com/hp-calculator