Am i losing power with stock egr?

[Nottoofast50]

I have a 92 gt with the following mods: 4:10 gears, pulleys, shift kit, transcooler, 1 5/8 mac longtubes, offroad hpipe, flows, ram air/K&n, ported gt40ps, ported explorer intake, ecam, 1.6rr, 76m C&L, 65m tb, 190 fuel pump, 24lb injectors,lakewood 90/10's 50/50's, 3g alternator, continental(taurus)electric fan with dc controller

As you can see a 65mm tb but i still have the stock size egr. Will changing the egr make a difference? 5+ or more hp? Or should I just leave it?

Car dynoed at 244hp/275tq without electric fan.

 

[89CopCoupe]

As long as it's functioning properly, it won't make a bit of difference.

 

[Michael Yount]

If you want to take advantage of the larger diameter throttle body and maf you've installed, yes, you should put the larger egr spacer in too. You've opened up the intake tract with t/b and maf, but all that flow still has to go through the stock egr diameter -- which means you might as well have the stock throttle body on there. How much HP? Hard to say -- but from a practical perspective -- doesn't make much sense to open up every other restrictive passage in the inlet tract, and then leave the egr spacer the stock diameter.

 

[Nottoofast50]

If you want to take advantage of the larger diameter throttle body and maf you've installed, yes, you should put the larger egr spacer in too. You've opened up the intake tract with t/b and maf, but all that flow still has to go through the stock egr diameter -- which means you might as well have the stock throttle body on there. How much HP? Hard to say -- but from a practical perspective -- doesn't make much sense to open up every other restrictive passage in the inlet tract, and then leave the egr spacer the stock diameter.

That's what I figured...thx.

 

[89CopCoupe]

My bad, I thought this was a newbie question asking about replacing the EGR valve itself ... I assumed you replaced the spacer also

 

[giddyup306]

Did you port the opening of the explorer intake? If not the spacer won't do you any good.

 

[Nottoofast50]

no.... why wont it do any good? I though the explorer opening was 65mm?

 

[giddyup306]

I'm pretty sure it's a 60. Now I'm wondering. I'll check.

 

[Nottoofast50]

Yeah let me know. I know the explorers came with 65mm tb's so it doesn't make sense to me that the opening on the intake would only be 60...

 

[giddyup306]

Yes it in in fact a 65mm. I don't know WFT I was thinking. sorry for the confusion.

 

[Nottoofast50]

It's cool you had me thinking I wasted my money on the tb. lol.