guys running 24psi plus on pump what plugs are you using??

[DSM90AWD]

I've run 7es gapped @ .28 thru 26psi on pump 93 then again every car is different.

 

[94Jettameowpsst]

My guess is that he's referring to E85 as "pump gas"

Edit: nevermind maybe... didn't notice what car I was talking about. Now I remember the 10 page long thread with everyone arguing he couldn't have got into the 10s on a 3052 with pump gas

Actually he means pump gas when he says it



I've ran 29psi on the evo 3 with 19deg advance on 7s no problem

 

[1glaserturbo]

NGK BPR8ES' gapped to .29 running 25psi with the FP3065 on 93 from 7-11....

 

[dsm-onster]

bpr7es, gapped at 0.28, 31 psi, 93 octane, water/meth injection. logged 52 lbs/min. Was able to run 26 psi w/out any injection. Being meticulous w/ your tune will make many things possible. I don't run out and jump in the car on a 90+ degree day w/ this tune. It's that thin of a line. My composite gasket is there as a "safety fuse".

I don't know that 8s would help and I don't want to throw that into the mix of components working against a good idle (bigger cams, 1000cc injectors, no ISC, MAFT).

 

[Reese92tsi]

I run BR8es @.025 with a T70 at 25-29psi with very little knock, straight 93 octane but I have to run around 2* of base timing.

 

[FonZ454]

I just switched from BPR7ES's to BR7ES's and they helped lower my knock a LOT. I used to get 3+ * of knock retard. Now I just get little blips here and there. Granted I'm not running a lot of boost (21psi spike)my car hauls ass, and my car is a knock happy car, so these plugs were the ticket to keep knock somewhat controllable. Try out the non-projected plugs, I'm sold to them.

 

[Boosted98gsx]

Hmm, O'Reily's doesn't carry them. Where do you get them from?

 

[bmxrider154]

You can get the BR7's or 8's at Advance Auto Parts if you have them in your area. The part # for the BR7's is 5122 if that helps.

 

[EclipseRacing99]

Hmm, O'Reily's doesn't carry them. Where do you get them from?

I bought br7es at O'Reily's in McKinney and in Plano. And i know the ones in plano stock the BPR8es and the BR8es plugs.

 

[pickens]

For people running 25+ psi on 91 octane is either bs-ing or their car runs like crap and is slow because of all the pulled timing or overly rich fuel.

I use dsmlink w/ a WB and I can only run about 23-24psi on my e316g. But my cars is just as fast at 20 psi because I can lean it out to where it should be vs keeping overly rich to run the higher boost.

I just don't want people to think that you should run 25+ psi on pump gas.

 

[dsm-onster]

For people running 25+ psi on 91 octane is either bs-ing or their car runs like crap and is slow because of all the pulled timing or overly rich fuel.

I use dsmlink w/ a WB and I can only run about 23-24psi on my e316g. But my cars is just as fast at 20 psi because I can lean it out to where it should be vs keeping overly rich to run the higher boost.

I just don't want people to think that you should run 25+ psi on pump gas.

Jsut because you can't tune it doesn't mean it can't be done .

I know several guys running medium framed turbos w/ pump gas and seeing 28, 29, 30 psi manifold pressures. Remember, compressor efficiency has ver little to do w/ intake manifold temps once a decent intercooler is introduced. ALL these guys have LARGE intercoolers and have spent most of their time tuning the rpm range from the start of spool to peak torque (which usually is close to full spool). Retardign the timing here helps the spool time and stops that spike in knock that is inherent to that time in the rpm range. If you can get through that point of "knock likelyhood", then you should be able to bring on full timing advance.

It's too hard for me to do, too. I use water injection .

 

[Boosted98gsx]

Jsut because you can't tune it doesn't mean it can't be done .

I know several guys running medium framed turbos w/ pump gas and seeing 28, 29, 30 psi manifold pressures. Remember, compressor efficiency has ver little to do w/ intake manifold temps once a decent intercooler is introduced. ALL these guys have LARGE intercoolers and have spent most of their time tuning the rpm range from the start of spool to peak torque (which usually is close to full spool). Retardign the timing here helps the spool time and stops that spike in knock that is inherent to that time in the rpm range. If you can get through that point of "knock likelyhood", then you should be able to bring on full timing advance.

It's too hard for me to do, too. I use water injection .

They certainly don't live in texas

 

[blcknspo0ln]

I have ran ran 24.5 psi dropping to 21 psi (damn internal WGA) with not a peek over 3* knock retard on 93 octane. For the DSMLinkers, that same log (or series of logs) I was doing 70-90 times of anywhere from 1.9 seconds to 2.0 seconds. To back up the theory, I ran my posted time at 23.5 psi dropping to 21psi and with only a degree of knock in third gear.

It's possible, but running over 24 psi on pump is pretty dumb, if you ask me. Now, running 24+psi on pump and meth, that's

 

[DSM90AWD]

E85 = Pump FTW

 

[pickens]

Dropping to 21psi is not running 24+. I can probably run 30 psi for about 200rpms if I let it drop to 21 psi after that. And honestly, for people with dsmlink and a WB, tuning is really not that hard. Its not a magic art. Set the boost you want to run, set the A/F you target, and then deal with timing as needed. Just know that peak cylinder pressures are around 5500RPM on the 4G63.

 

[dsm-onster]

Dropping to 21psi is not running 24+. I can probably run 30 psi for about 200rpms if I let it drop to 21 psi after that. And honestly, for people with dsmlink and a WB, tuning is really not that hard. Its not a magic art. Set the boost you want to run, set the A/F you target, and then deal with timing as needed. Just know that peak cylinder pressures are around 5500RPM on the 4G63.

Considering that there are people out there that have dyno tuned over 25 psi on pump gas and gained hp by tuning at this boost level, then there is some way to do it and it has been beyond us.