Boosting 5.5psi - Some Questions

[siennasc98]

This is to the people out there who are boosting 5.5psi right now...
Beyond the usual fuel upgrades, knock sensore upgrades/relocation, maybe ignition, maf, tranny cooler, etc.
What other upgrades have you done to hold the extra power?
As well, any other problems come up yet?
And does anybody have any dyno charts?
Thanks!

I have the 2.9" pulley and boost should be 5.5psi but I'm hitting the 6-6.5 psi mark on the TRD boost gauge. The fuel system (fuel pump/rails, injectors), thermostat, knock sensors are still stock.
Upgrades done for the 5.5 boost are:
- The spark plugs are Toyota (Denso) Iridium SK20RII, P/N 90919-01210(0.7mm tip, rated at 120K miles)
- New set of spark plug wires
- I have the Toyota air-cooled ATF cooler installed in the left fender
- I installed the CP-e MAFci (tunable) for the Solara Gen-1 and just using the base (default) fuel map that came with unit.
- Though not needed, the MAF and EVAP vsv-sensor were replaced during CP-e intake installation
- 130 AMP alternator from a 2001 Toyota Highlander

I have no issues and loving the extra (element of surprise) power.


My son took the picture and you might have noticed that no vehicles in front of me. We are climbing a hill and they are all behind.

[Fletch]

My 5.5psi pulley had 2.9" scribed on it.

[siennasc98]

My 5.5psi pulley had 2.9" scribed on it.

Thanks, you are correct. It's a 2.9" pulley and I edited the above post.

[Eye8Pussies]

thanks for the info everybody


I'm more confident about running a 5.5psi pulley now, and I will pick one up once I get everything running perfect on my 4psi setup (almost perfect now...)


The only thing is that I have a 2.8" urd pulley and I'm not sure if I want to risk that extra .5psi on my engine (that has quite high mileage- most ppl wouldn't even boost at this point)....or if I should just see if anybody wants to trade for a 2.9" pulley



what do you guys think?


and does anybody burn a bit of oil now that they're blown? my car has never burned any oil until I installed the blower, and now it burns about 1/2L every 3500km or so. nothing to be worried about in my opinion considering some cars burn more than that stock, but I'm just wondering if it's the same for everybody else.

[Akfahad]

I've never really measured how much I've burned, but I've noticed that once I finish the oil change to about the time I do another one, it's gone down a bit. But again, nothing to really worry about. In terms of the mileage, you probably have more than me, but I'm over 100x now and she still runs fine (knock on wood).

Josh

[Fletch]

I burned more oil, in life after S/C. I burned around 1 qt every 2000 miles. You burn about 1/2 quart every 2200 miles.

I first used 5w or 10w 30 and switched to straight 30 to reduce oil consumption. Using 30, 1 qt every 3k miles, then I would just change it.

[Eye8Pussies]

^ thanks...good to hear that my motor's still holding up pretty good...



soooo....anybody want to trade a 6psi urd pulley for a 5.5psi pulley?

[DatSRBoi]

My 5.5psi pulley had 2.9" scribed on it.

Thanks, you are correct. It's a 2.9" pulley and I edited the above post.

DUDE you dont know how much I want your gauges

Been looking for one but cant find one for cheap at 10psi max

[CASTRO]

^
i've got the same one... except mine is in black

[DatSRBoi]

^
i've got the same one... except mine is in black

Can I have it

[siennasc98]

My 5.5psi pulley had 2.9" scribed on it.

Thanks, you are correct. It's a 2.9" pulley and I edited the above post.

DUDE you dont know how much I want your gauges
Been looking for one but cant find one for cheap at 10psi max

I bought mine from https://www.1sttoyotaparts.com/partscat.html
Item Number MSRP Core Price Price
ptr013502005 $99.00 $ 0.00 $71.28
BOOST GAGE ASSY VYTA - Tacoma 02-03

[krook]

can you remove the gauge from the mount or is it all one piece?

[CASTRO]

its removable

[tucky]

Great thread, when running 5.5 psi can the standard ecu handle it or do you have to go piggy back/stand alone?

[DatSRBoi]

Great thread, when running 5.5 psi can the standard ecu handle it or do you have to go piggy back/stand alone?

Im not saying it can, But I AM saying I recommend not. You have to be pretty lucky to pull that off.