once ur temps go up ur boost will change too.... take the car out in the morning when its even colder and ull see even higher levels.... be careful
as far as the stock guage... I would not worry about it.... just watch ur delfi.. since its connected to a vacuum source... it does not lie.

 

(A little OT, but Jags, your tt is SICK!!!)



Ok, go on...

 

Tick...tick...sharky!

 

I taped into the y pipe for my boost reading. I will post the result tommorrow.

Jag

 

Thanks - I need to take new pics with the new goodies

Jag

 

this is why these gauges are worthless when it comes to tuning/diagnosing problems. they look trick as hell, but that's about it.

you need a good datalogger/gauge package. i keep recommending the zeitronix unit but you guys keep ignoring me

not only can you see real time values for the important stuff, you can see peak hold as well. but the really nice part is that you can plug a laptop in and datalog. it's great for reviewing and comparing TPS, AF, Boost, EGT's, etc... the peak hold numbers are just too deceptive as if you spike for a split second, that's the number you get.

 

my gt700 does about 19psi peak on pump and bleeds down to 16-17psi by redline. on the race program, i get 24psi peak and bleeds down to 22-23psi by redline.

- chuck

 

you want a swatch with that Never used teh defi stuff but from what I've heard they're kinda strange in terms of calibration etc... pump should be sustained 20 or thereabouts and 100 should be 24 or there abouts. I only use Autometer and I guess it depends also on where it's hooked in to...

 

shark look back in your old thread even you showed high boost levels lie what Im getting. Everything for me is perfect. Look back Im going to look for the post where you wrote the boost expected.

-Suman

Mike at Evo said im right where I should be. I too thought it was high. Jags your in good shape man dont worry.

Just got back and the car ripped tonight in this retardedly cold weather in CT.

-

 

Jag,

It is my very vague understanding that certain of EVOMS' programs essentially "trick" the ECU into thinking the boost is lower than it actually is, in order to prevent TB shut down. With these programs, the OEM boost guage will read lower than the actual boost (at full boost). The Defi guage will be accurate. My car has such a program. I do not know whether the GT700 prgram operates this way (or your prgram in particular).

Craig

Ps: Thats a lota boost for stock internals.

 

Why is there such a huge difference in boost levels between similar power levels? High Hats stated a 585 rwhp at 1.6 bar and Scott 6oo rwhp at 1.3 bars. Given that the vehicles engines are relatively similar , why the same power but significantly different boost levels? Thanks, Kevin

 

i've often wondered that too. protomotive cars tend to make as much or more power to comparably equipped cars using less boost. must be a timing/software thing.

 

to be fair.. proto does custom work- almost every car they do is a one off....... evoms on the other hand sell kits that can be installed by a network of dealers... and the tuning is preprogrammed...
proto, on the other hand, is specific to ur individual car... so U would expect him to squeeze more juice out of the car...
also, he redoes the whole intake, ICs, etc...for better flow and efficiency... and thats where I think they have an edge.... he also has his own MAF solution... thats a plus....
nothing to take away from others... but Ill just stop since Im partial with my opinion and don't want to p%ss anyone off.
Tuners have different philosophies and approaches and there is nothing wrong with that....

 

Now rememeber my 585 whp was at 93 pctane. I was making 640whp at 100 octane program with a cycle. So I called my buddy who dynoed the car he said sustained boost of 21.5 lbs not 23 lbs and 24 lbs on 100 octane that might sound a little better to you guys but Im still boost 1.5bars.
-Suman

 

Thanks for the clarification Kevin