Need meth injection advice

5.4 speedster · 03-04-2006, 01:24 PM

Heres the scenario: 06 sti only mod is blitz nur spec exhaust so far, the car will see bolt ons in the near future including intake, turbo inlet, crank pulley, turbo timer, boost controler. The car is driven daily in arizona and it's starting to warm up. How effective is meth/water injection in these cars at moderate power levels? This is my buddys car and I am trying to tell him to do meth/water injection. I have a snow meth kit on my blown 95 mustang and it made a huge difference in power and inlet temps. How much boost do these cars see stock? Would the meth/water cooling effect be needed @stock boost levels or would it be a waste?

***520*** · 03-04-2006, 01:46 PM

Meth/wi is always something good to have for safety, but you dont want to rely on it incase it malfunctions. Its all up to your buddy whether he needs it or not, but i dont think it it a necessity. stock the car boosts 13-14 psi (correct me if im wrong). also water/meth injection is only good if TUNED for it. IMO he doesnt need a boost controller. Also no turbo timer is needed b/c the turbo is water and oiled cooled.
hope this helps
-520

5.4 speedster · 03-04-2006, 02:06 PM

it does big time. I wasn't aware that he didn't need a turbo timer. thats pretty neat. isn't there power to be made simply by upping the boost? I'm aware that tuning needs to take place but I assumed you could buy a timer and up the boost for some hp and tq gains. Are the turbos already pretty maxed out?

***520*** · 03-04-2006, 02:09 PM

no the turbos are not maxxed out, they max out around 21psi, but you do not want to just slap on a boost controller and turn it up. I say he gets a downpipe and goes Cobb AP stage 2. He will definetly feel the difference Especially with a protune, it is over 300whp and even more torque i beleive. also his warrany will still be good and you can take of the AP in minutes so the dealer wont even know you had it.

5.4 speedster · 03-04-2006, 02:14 PM

ok well his APS cold air intake is going on in the am so that sone mod down. He wants to finish off his exhaust system so what DP might go well with the blitz exhaust?

***520*** · 03-04-2006, 02:16 PM

i hear helix is good, but loud.

you should also tell him to join this site in case he has future questions.

mrida · 03-04-2006, 03:21 PM

Stock boost is set to 1 bar (14.5 psi), a timer is always nice to have regaurdless if the turbo is oil and water cooled. Would you want to shut the oil and water off to your turbo right after a run ? the units remain spinning for about 1 minute after a hard run and the oil in the bearings gets hot and start to coke.
21 psi is out of the tubo's efficiancy and not a good boost to run. I had mine set to peak at this and now I make more power at 19 tapering to 16 by redline. As far as W/i is on a stage 2 car, Ill let you know in a week or 2 when mine goes in. I expect good gains out of running a 50/50 mix water / meth.

***520*** · 03-04-2006, 03:24 PM

Quote:

Originally Posted by mrida

Stock boost is set to 1 bar (14.5 psi), a timer is always nice to have regaurdless if the turbo is oil and water cooled. Would you want to shut the oil and water off to your turbo right after a run ? the units remain spinning for about 1 minute after a hard run and the oil in the bearings gets hot and start to coke.
21 psi is out of the tubo's efficiancy and not a good boost to run. I had mine set to peak at this and now I make more power at 19 tapering to 16 by redline. As far as W/i is on a stage 2 car, Ill let you know in a week or 2 when mine goes in. I expect good gains out of running a 50/50 mix water / meth.

Awesome, i also have the TT function on my car, but i was advised to by my tuner because the turbo is so big. It makes sense what you are saying though. I agree 21 is not a good psi to run. be sure to let us know how your meth goes.

mrida · 03-05-2006, 05:00 PM

Quote:

Originally Posted by 520hpSTi

Awesome, i also have the TT function on my car, but i was advised to by my tuner because the turbo is so big. It makes sense what you are saying though. I agree 21 is not a good psi to run. be sure to let us know how your meth goes.

Oh dude i'm soo pumped for it..... just waiting for that nice tax return from the feds and its on with some other goodies !!!!!

I'll be sure to post when i get it done, I havnt heard of anyone that i can think of that have run it a stage 2 car. I just got the car tuned recently, and the meth will be tuned on the same dyno. I'll be sure to post my baseline vs protuned vs meth protuned.

***520*** · 03-05-2006, 06:33 PM

Quote:

Originally Posted by mrida

Oh dude i'm soo pumped for it..... just waiting for that nice tax return from the feds and its on with some other goodies !!!!!

I'll be sure to post when i get it done, I havnt heard of anyone that i can think of that have run it a stage 2 car. I just got the car tuned recently, and the meth will be tuned on the same dyno. I'll be sure to post my baseline vs protuned vs meth protuned.

awesome, i have been wanting to see some actualy dynos w/ meth compared to just a protune without it.

03-04-2006, 01:24 PM	#1
5.4 speedster Amateur STI Driver Car: 95 saleen Fav Mod: Coming Soon Posts: 23 IWSTI Addict since: Aug 2005 Trader Rating: (0)	Need meth injection advice Heres the scenario: 06 sti only mod is blitz nur spec exhaust so far, the car will see bolt ons in the near future including intake, turbo inlet, crank pulley, turbo timer, boost controler. The car is driven daily in arizona and it's starting to warm up. How effective is meth/water injection in these cars at moderate power levels? This is my buddys car and I am trying to tell him to do meth/water injection. I have a snow meth kit on my blown 95 mustang and it made a huge difference in power and inlet temps. How much boost do these cars see stock? Would the meth/water cooling effect be needed @stock boost levels or would it be a waste? This ad is not endorsed by this member. Please register or login to hide this ad.

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03-04-2006, 01:46 PM	#2
*520* STi > EVO... Wait what??? Car: 03 EVO Fav Mod: stock :( Location: Michigan / Saint Louis Posts: 12,393 IWSTI Addict since: Oct 2005 Trader Rating: (1)	Meth/wi is always something good to have for safety, but you dont want to rely on it incase it malfunctions. Its all up to your buddy whether he needs it or not, but i dont think it it a necessity. stock the car boosts 13-14 psi (correct me if im wrong). also water/meth injection is only good if TUNED for it. IMO he doesnt need a boost controller. Also no turbo timer is needed b/c the turbo is water and oiled cooled. hope this helps -520

03-04-2006, 02:06 PM	#3
5.4 speedster Amateur STI Driver Car: 95 saleen Fav Mod: Coming Soon Posts: 23 IWSTI Addict since: Aug 2005 Trader Rating: (0)	it does big time. I wasn't aware that he didn't need a turbo timer. thats pretty neat. isn't there power to be made simply by upping the boost? I'm aware that tuning needs to take place but I assumed you could buy a timer and up the boost for some hp and tq gains. Are the turbos already pretty maxed out?

03-04-2006, 02:09 PM	#4
*520* STi > EVO... Wait what??? Car: 03 EVO Fav Mod: stock :( Location: Michigan / Saint Louis Posts: 12,393 IWSTI Addict since: Oct 2005 Trader Rating: (1)	no the turbos are not maxxed out, they max out around 21psi, but you do not want to just slap on a boost controller and turn it up. I say he gets a downpipe and goes Cobb AP stage 2. He will definetly feel the difference Especially with a protune, it is over 300whp and even more torque i beleive. also his warrany will still be good and you can take of the AP in minutes so the dealer wont even know you had it.

03-04-2006, 02:14 PM	#5
5.4 speedster Amateur STI Driver Car: 95 saleen Fav Mod: Coming Soon Posts: 23 IWSTI Addict since: Aug 2005 Trader Rating: (0)	ok well his APS cold air intake is going on in the am so that sone mod down. He wants to finish off his exhaust system so what DP might go well with the blitz exhaust?

03-04-2006, 02:16 PM	#6
*520* STi > EVO... Wait what??? Car: 03 EVO Fav Mod: stock :( Location: Michigan / Saint Louis Posts: 12,393 IWSTI Addict since: Oct 2005 Trader Rating: (1)	i hear helix is good, but loud. you should also tell him to join this site in case he has future questions.

03-04-2006, 03:21 PM	#7
mrida Junior STI Driver Posts: 101 IWSTI Addict since: Nov 2005 Trader Rating: (0)	Stock boost is set to 1 bar (14.5 psi), a timer is always nice to have regaurdless if the turbo is oil and water cooled. Would you want to shut the oil and water off to your turbo right after a run ? the units remain spinning for about 1 minute after a hard run and the oil in the bearings gets hot and start to coke. 21 psi is out of the tubo's efficiancy and not a good boost to run. I had mine set to peak at this and now I make more power at 19 tapering to 16 by redline. As far as W/i is on a stage 2 car, Ill let you know in a week or 2 when mine goes in. I expect good gains out of running a 50/50 mix water / meth.