JRSC Race Kit producing only 5 psi.

[vbpracer]

For a year now i have had jrsc street version on my car. Recently i decided to upgrade and today i finally installed everything.

Changes i have made:

Changed 4.4" to 4" pulley with 62.2 inch gaterback belt.
Replaced ngk spark plugs with ngk (iridium) spark plugs, but a step colder.
Replaced stock injectors with rsx type s 310 cc injectors.
Still with powercard.

Previously the charger was producing 4 to 4.5 psi, as seen on the boost gauge. (Btw had a gates belt on there that was missing chunks of ribs, only after 10K miles)

Now the boost gauge is only showing 5-5.2 (as far as i can tell) at 6.5K rpms
Have tightened the belt as i thought this may have been the problem.

Also i feel that between 5.5K and 6.5K rpms the rpms are not moving up steady, almost feeling as if it is holding back.

Not sure what the problem is, maybe some off you help me out with an educated opinion.

Now this is the cheap way out for not having kpro and tuning, so no need to comment on that.

Supporting Mods

Injen sri
Jrrh
2.5 inch tanabe midpipe


Thanks

[Si on PSI]

who tuned the car?

[vbpracer]

who tuned the car?

The powercard did

Don't have k-pro

[kprocivic]

The powercard did

Don't have k-pro

that may be your problem.

[vbpracer]

that may be your problem.

Could be, but both members mustclimb and nrginny have a simular setup, or had. Except mustclimb has stock header.

So the fact that at least one other setup produced normal psi for racekit indicates to me that i have a problem somewhere.

[clutch797]

Make sure your in Mad Vtec, Regular vtec won't let you hit any more then 5psi.

[superchargedk20]

well that short ram is killin u, thats for sure

[jerseyjew]

Make sure your in Mad Vtec, Regular vtec won't let you hit any more then 5psi.

hahaha love it.

[clutch797]

hahaha love it.

Now that's some sig shit right there.

[thisisagame24]

well that short ram is killin u, thats for sure

that short ram wont affect his psi levels.

whats killing him is doing the race kit half ass with out proper engine managment and injectors that are too small

[vbpracer]

that short ram wont affect his psi levels.

whats killing him is doing the race kit half ass with out proper engine managment and injectors that are too small

Yes i know this but i dont have the funds to pay for kpro and a tune as of right now. But like i said before, others with a simular set up are getting higher psi.

[vbpracer]

Make sure your in Mad Vtec, Regular vtec won't let you hit any more then 5psi.

Thanks for your great advice

[ohdamngetit]

Make sure your in Mad Vtec, Regular vtec won't let you hit any more then 5psi.

I seriously LOL'd hahahahaha. Def sig quality!

[thisisagame24]

Yes i know this but i dont have the funds to pay for kpro and a tune as of right now. But like i said before, others with a simular set up are getting higher psi.

only one person has pulled it off sucessfully.

when i had my JRSC r i went over a year with out a tune. the base map that kpro gives is good but wont give max power. its designed to run on the richer side to protect the motor. but not rich enough to bog it down. and you are really worried about a tune there are several members on here that could help you out with some street tuning.

i kinda look at it this way....wait a few more months and get kpro and do the race upgrade then, or do it now with out it and run the risk of seriously damaging your motor. which will cost you a lot more than kpro. something about running 8lbs of boost with the stock ecu scares me


and as for your problem did you install the map relocator bracket?

[beechstreet]

i kinda look at it this way....wait a few more months and get kpro and do the race upgrade then, or do it now with out it and run the risk of seriously damaging your motor. which will cost you a lot more than kpro. something about running 8lbs of boost with the stock ecu scares me